Glad to see Risa was able to find satisfaction in her death, however brutal. The handjob reaching through her own guts was an especially nice touch.

As for your request for feedback on ideas for Naoki's teammates and followers: Hmm. Maybe platonic friends could commit cross-cut seppuku in front of each other, while lovers and friends with benefits could disembowel each other?

Maybe they could storm the principal's office and kill him for his part in Naoki's death. Then the vice-captain could give an on-camera speech advocating for a cultural shift towards committing seppuku as a form of fulfillment and reward the way Naoki viewed it (since it seems she deliberately crashed and burned so she could die in front of the school), rather than simply as a punishment. Then mass seppuku time!