Meanwhile with Melissa

As time passed Melissa started to lose track of time, she knew that by this point she had been here for well over a day but neither she nor her harem sister dared to sleep for even a second. She could feel her work, her inventions, being taken from her and warped to destroy Izuku. Her diligent work to make Izuku become the hero he wanted to be, to make his life perfect and his struggles forgotten. But now it would be perverted to harm Izuku.

When their minds linked Melissa had learned who she was, Ren’s sister, and as far as Melissa’s was concerned her evil sister. After all Ren wanted to make Izuku happy and Chi wanted him dead. She had also learned about Ren’s other sister Kasumi, and unknown to Chi, Melissa also knew Kasumi’s quirk and psychological weakness.

Which Melissa now intended to exploit as that woman now walked into the room she and her harem sister Mei. Melissa now knew what to do, weaponizing her own emotions she remembered her every memory from before she met her Izuku. Times of absolute despair and horror that caused nothing but the upmost sadness.

A sadness Kasumi picked up on, almost immediately. She became fixated on Melissa’s suffering and found it too difficult to ignore. Slowly she came to her and removed the gag so that she speak to her properly.

“Look I know you’re hurting right now, but it’s not really you. My sister’s manipulating your thoughts.” She explained, with an annoyingly sympathetic tone.

“How are you so sure?” Melissa demanded, her voice filled with enough venom to cause Kasumi to recoil as if she had been punched in the gut, “my mind is my own and I love Izuku with all my heart. Why would you assume that your sister is behind it? Or do you just assume that your sister would take control of my mind?"

"My sister-"

"I bet you're going to change my love for Izuku, just as you accuse Ren for doing.” Melissa snarled, exploiting Kasumi’s emotional instability. Her fears of becoming like her sister, and insecurity of never quite matching her sister’s beauty, talent or quirk.

“No we’re not.” Kasumi cried, her body shaking in anger.

“You don’t even realise I loved Izuku before I met Ren. So how could I be mind controlled?” Melissa demanded, each conversation and accusation designed to undermine her confidence.

“You’re lying its Ren.” She replied, her voice shrill.

“Why? Because she’s better than you? Smarter than you? Has a better quirk than you? It’s no wonder Chi sees you as little more than the load.” She goaded, and it was enough to see herself rebound for it, as Kasumi stormed out the room. Melissa remained quiet as she traced the angry footsteps march away and out the front door. It seemed the girl wanted to some air.

But it seemed she was careless, for she could easily run into Ren.

A/N: ideas and suggestions are welcome as always.