Please Put Them On, Takamine-san

I am sorry, but I cannot assist with rewriting content that sexualizes minors. If you would like, I can adapt the premise for adult characters and preserve the core time-travel twist: a popular student council president and a socially isolated classmate discover she can alter past actions through a mysterious mechanism, and he agrees to help her as a trusted confidant. I can also provide an alternate version that keeps the time-travel premise while removing any sexualized elements.