First something simple

Melissa was first, dragging Izuku towards one part of the lab where an assortment of machines were held. In every corner there was a discarded gadget or weapon, each more advanced than the last, until finally coming to what seemed to be a huge suit of powered armour.

“So Izuku my love do you remember the gauntlet I made for you the first time we met?” Melissa asked, gyrating her body around his, trying to soak in as much of his presence as possible.

“Yeah it was great, I’m sorry I broke it.” Izuku replied, his eyes downcast in apology.

“Oh don’t worry about it Izuku. It was yours to break, besides it was too primitive to be of much use.” Melissa assured him. This caused Izuku to gape.

“But it was one of the most advanced devices in the world.” He reminded her.

“Compared to this it’s no more advanced than a stick.” She said gesturing to her new suit of armour. It was much bulkier than his own suit, and far more intimidating.

"That looks so cool, but it also looks really heavy.” Izuku mumbled, Melissa simply smiled.

“Try lifting it.” She said, Izuku obliged grabbing it with both hands and finding to his shock it weight less than a feather.

“How?” He asked, only to see Melissa’s awed smile.

“It’s my newest invention. 700 hundred years ahead of its time, lighter than a feather able to withstand a direct hit from a hundred ICBMs without a scratch.” Melissa gushed.

“How?” Izuku asked.

“Oh I won’t bore you with the tech, but this device will also both enhance and help control your power, provide complete immunity to the elements, and contains an advanced AI completely devoted to you.” She gushed as Izuku looked impressed.

“It looks amazing, I just worry that people won’t be able to see my smile. It looks a bit intimidating.” Izuku said gesturing to the mask. It certainly wasn’t the most welcoming appearance.

Melissa however looked horrified at such an oversight, “I’m so sorry, I didn’t mean to. I’ll fix this you have my word.”

“It’s no problem Melissa. Now we can get onto the more erotic stuff.” Mei assured her pulling out one of her net guns, “for this one I’ll need a volunteer. A sexy lady ideally.”

“I’ll volunteer beloved.” Ren said eagerly.

“Excellent now just stand there and-“

“BANG”

Ropes fired out of the gun in an instant, snaking around her. Like snakes they bound her in Shibari ties, wrapping her tightly especially around her breasts and her legs. Finally a gag wrapped around her jaw, clamping her mouth shut.

"Tada, the bondage gun. Practical for both bondage, pleasure and hero work. Unbreakable ropes yet perfect for the bedroom.” Mei announced, but Izuku wasn’t quite listening.

“Are you okay Ren?”

With her mouth gagged she spoke telepathically, “I’m fine Master Izuku, do you like seeing me this way?”

“Let’s save it for later, but that’s really interesting.” Izuku replied blushing, but not quite hiding his arousal much to the delight of the three girls.

“We’ve got more Izuku, enough to fulfil all your heroic and erotic fantasies.”

A/N: more suggestions are always welcome. Special thanks to DV43 for all the wonderful ideas he suggested though more are always welcome.