Nah, Mari order Sheila to honor the rules of the competition (suck Kensou's dick or fuck him , I don't remember the details, she kick Kensou on the balls and quit, Haruka or Kanu complained about MC is slow on cumming and that he might be gay or something ,yet she did make him cum and then fight with Sheila ...)
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Well that is the obvious choice but that raise another question, Whoever have Jira not harm the MC does he or she know his true Identity??that he is a Sazaki I mean....So far Inori's father and Keiko are the only 2 people that know besides Lily/Rachel the redhead nurse