Yes, but amazingly, it ends up making things worse

Telling Emi the truth was no longer a matter of right or wrong; you were going to go crazy if you kept holding this in! The ringing laughter of Benefactor inside your head felt like punishment for going back on your word to staunchly resist the use of your Pendelum. A protective part of your mind told you that you were doing a good job, trying to do the right thing and limit the use of your powerful quirk; if anything, you'd shown so much restraint compared to Benefactor! You'd had only good intentions and you hadn't meant to exploit Emi at all. There was still every chance in the world to end up with a normal, happy life that painted over all the **** that the villain had caused...

... And then you reminded yourself that the protective part of your mind was Benefactor. That was probably how he'd rationalized his own use of the quirk before he went off the deep end.

"Hm hm... Young Ren, we're both slaves to this hypnosis too, you know! What human could resist using such a perfect quirk: undetectable, yet responsive and nearly all-powerful?! You'd just as well try to teach yourself not to eat or breathe."

Shaking that thought from your head, you watched the clock, ignoring the way that its open-mouthed smile reminded you senselessly of your old mentor. It shouldn't be much longer now. If you just buried your head back in the couch cushions, you could wait it out. Pathetically, you crawled back onto the couch in the living room and pushed your head under the pillows, drowning out the sound of your own conscience as much as you could.

Surprisingly, you managed to accomplish your goal. In fact, you stifled that voice so completely that you were surprised to find yourself being shaken awake by Emi's hand on your shoulder a few hours later. "Heeey, you slept in pretty late too, didn't you? What are you doing taking a nap in the middle of the day?" Ms. Joke joked. You weren't sure if she actually believed there was nothing wrong and that you were just that tired, or if she noticed something was bothering you and thought it'd be more polite to let you tell her on your own. She cleared the air by taking a seat on the opposite end of the couch while you sat up, leaving a seat respectfully between the two of you. A smile spread across her face, though a worried one. "You sounded like you were having a rough dream. I should have woken you up when I first came in."

You slowly responded that you were feeling pretty troubled... but you couldn't decide whether to tell her why.

"I know what'll cheer you up! There's this variety show that comes on around this time-- laugh out loud funny! You're gonna love it-!"

Before Emi could grab the remote control and divert the two of you with a fun TV show, you interjected, shouting for her to hold on a minute. When she paused with her eyebrows raised-- not scared, but confused-- you quickly explained yourself. You told her what she needed to know: that, ever since the morning when she slept, you'd been exerting your quirk upon her at different moments. First, you did it to make her get out of bed. Then, you did it again to have her explain why she dressed that way. Her face went a bit red as she remembered that embarrassing scene, but you begged for her to keep listening.

It got worse... you'd snuck outside and kept watch on her while she did laundry, knowing she could be in danger of acting under the effects of your Pendelum. She had; you told her candidly that you'd watched her use a toy on herself in the laundry room until she climaxed. The only part you omitted was the most embarrassing part: that you'd also jacked yourself off at that point. Just recalling the hot, satisfied expression she'd worn was making you hard again...

The fact that this part of the story didn't get any kind of reaction out of her just showed you how far in the hole you'd put her. "Ha ha! Well, you shouldn't have snuck out, but it's nothing weird. That's just something girls do!" she giggled, slapping you on the shoulder and then shaking you back and forth. "I guess you never got that lesson from old flat-top, but it's not so weird for girls to fap." Just as you'd instructed her, she'd used her toys when she wanted and wasn't worrying what you knew about it.

You shook your shoulder free and then raised your voice: it wasn't normal! You asked her to think hard: had she ever masturbated in the laundry room before?

"Well, no, but..." She paused, then crossed her arms and closed her eyes, growing a bit redder and showing a rare frown. "Aaah, I can't tell you!"

You nodded eagerly. What could she say? The answer was this: she'd only done it because she'd been hypnotized to do so. She had to realize that by now! Growing frustrated, you exerted the most harmless, tiny tip of hypnosis that you could upon her:

"You can tell Ren what you think drove you to masturbate earlier today."

The effect was almost instant; she opened her eyes to half-lid and put on a slightly curving smile, like a little child, embarrassed that she'd been caught in the act and afraid to look their parent in the eye. "... I mean, I've never had a male house-guest before, sleeping just two rooms over from me. I've been thinking it's weird how... you know, Benefactor abused you, but none of that resulted in malnourishment or anything. Frankly, you're kind of hot for an 18-year-old, life-long prisoner of a villain. So, I just figured, that's probably what had me kind of randy."

Was that a rationalization her mind had come up with to preserve the hypnosis? The question you'd **** her to answer was a little weird... that was indeed what she thought drove her to do what she did. All you really cared about was making her understand the gravity of Pendelum's effectiveness, but it seemed that your Pendelum wouldn't allow such a thing to happen, almost as though it had a sense towards its own self-preservation. Remembering back to that day... what if Benefactor hadn't transferred so much of his quirk over to you? He may have been so powerful that even Eraser Head and Ms. Joke would have ended up as his hypnosis puppets, with the right preparation on his part.

"Hey, don't clam up on me now! That's embarrassing!" Ms. Joke urged you, pressing her fingers together while doing her best to put on a care-free grin. "Don't worry. I'm not going to let things get weird just because I have a young guy living with me." Frankly, you didn't think it was under her control, but you kept that thought to yourself. "I mean, I'm pretty sure I've been perfectly normal all day, but if it's really bothering you, maybe we should try some tests? I wasn't joking when I said my Outburst is no joke! As weird as it sounds, if it'd make you feel better, I can drive you nuts with my quirk. You'll see that, under its influence, there's no way you can do anything to me with that hypnosis! I'm a pro hero; my street cred's on the line here!" she patted her bicep with self-assurance and winked in your direction, trying to reassure you it was no big deal.

It was a big deal-- a huge deal! Why couldn't she understand that goading you into using your quirk, whether for tests or whatever, was the absolute last thing she should try to do?!

On the other hand, it really would be reassuring, in a way, if you tried to exert your hypnosis upon her and found that her Outburst outdid all of that. The knowledge that your Pendelum was not all-powerful would, ironically, help you regain a sense of control in your daily life. Many people would kill for a quirk like this and all you wanted was to prove to yourself that you could bury it away...

Interrupting your thoughts with a mischievous grin, Emi put a finger to each of her cheeks and beamed at you. "And now, a joke! Knock knock!"

You answered: who's-

Before you could get out the next part of the joke out that Emi had trained you to say, you found yourself overcome with a sensation like hiccups. Only, instead of those sorts of **** noises, you instead found that laughter began to peel out, unbidden. There was no stopping it; soon you went from giggling, to guffawing, to howling! In no time flat, you'd buried your face back into the cushions, trying to escape a feeling as though you were being tickled all over, from the bottoms of your feet to the sensitive space under your ears! On the bright side, the sensation was so overwhelming, you couldn't think about Benefactor or his evil. You felt 100% certain that he wouldn't reappear to you as you were in this state.

Laughing was still a foreign sensation to you and this was way too much of it at once. You couldn't think about anything but stopping it!

"Ha ha ha ha! Hey, aren't you gonna answer the door?" Emi giggled teasingly. "Enduring this may be tough, Ren, but this is the kind of tough love we hero teachers are used to dishing out! Trust me, staying with Shota would have been so much worse!"

You could barely even hear what she was saying. You had to stop her! Before you could even think about it, you grabbed her hand in your own and activated your quirk, while laughing like a madman:

"You won't use Outburst against Ren!"

What would have been the ideal outcome here? That the laughter continue unbidden, proving to you that Ms. Joke was the caretaker you needed, one who could promptly curb any villainous or uncontrollable impulses that popped up inside you? That the laughter would stop right out, proving that you were capable of ending any threat she posed to you instantaneously?

To your horror, you got the latter. As if you'd only been dreaming the experience of Outburst, you suddenly felt the laughter fade away, replaced by a sense of dread. It felt like you couldn't make yourself laugh if you tried. Emi's hand reached out and began to rub your shoulder in an attempt to comfort you. Your eyes moved down slowly and watched her fingers there, uncomprehending.

"Sorry, Ren, I got carried away! Don't worry, I won't use it again." The green-haired woman gave a pretty smile, as though she was telling you something especially reassuring.

You begged her to use Outburst again. You asked her to use it again immediately! In your frustration, you didn't think to reverse the command yourself. You wanted her to prove she could do it.

She couldn't!

Emi raised one eyebrow and gave a lop-sided smile. "Huh? You really must have a screw loose! After seeing all that, there's no way I'd use it on you again!" Her internal logic-- that of a woman who already wanted to be gentle towards you-- made this an easy conclusion for her to jump to.

That was it. You'd confirmed your worst fear. Despite the best efforts and fore-planning of the hero community, they'd made a critical miscalculation; they failed to anticipate that you'd be capable of shutting down Ms. Joke's quirk whenever you wanted to. This was a casualty of the hero's creed to show mercy to people like you and hold back. If you wanted Emi to put an end to Pendelum, it would probably mean hypnotizing her to do that, ironically enough.

"Geez, for a person who just got told you're not going to laugh yourself to ****, you look pretty spooked," she pointed out, finally rising up from the couch and approaching to put one hand upon your forehead. From this distance, her pretty green eyes, her citrus-scented perfume, the softness of her hands, and the vision of her large bosom hanging against the thin fabric of her blouse all begged you to use the now proven omnipotence of your power against her. The audible voice of Benefactor from somewhere in the room began to goad you to do the same. "You really are running a fever. Uh, hey, lie down for a bit, okay? TV can wait. I'll put dinner on; you didn't eat much today."

You told her plainly that you were delirious. You were watching Benefactor laugh at you from the kitchen right this second.

"Shoot! Uh, hang on... I'm gonna call Shota." With a sense of urgency befitting a hero, she ran for her smart-phone, which she'd left on the couch.

You could tell she was panicking a bit. Oddly, it didn't contribute to your sense of panic this time, perhaps because you'd already had no fewer than three hysterical fits today already. You were just getting tired of them. With a frown, you told her not to bother with it... This was something you had to think up an answer to on your own. What was the answer? Were you just doomed to spiral down this hole further and further? Was the only solution to go and become a hermit somewhere, isolated from human contact? Did you need to hypnotize yourself into not using hypnosis? Could you even make yourself do that? Would you ultimately surrender and let your baser nature take the wheel?

"You're going to strain your brain, young Ren! That's your most important asset, you know? Be careful!"

You ignored Benefactor's laughter and instead focused all of your efforts on coming up with your next course of action. Your decision could impact the rest of this new life of yours going forward...