@rokazeki if it is a bittersweet than shit it's going to be depressing but if it's not then I'll have a fucking grin on my face for the entire day.
On another note I see this going for 8 or 9 more chapters before a solid conclusion. Don't know if Nishimori (MC) will actually be able to face Hasagawa (FMC) after everything goes down. She may like him but he may turn her down just for feeling disgust. I personally don't find disgust for childhood sweetheart loves albiet the premise of this one was virginity but if it's a childhood love then the unsaid rule is their both virgins sooo...
I really do hope that the FMC from the futures spirit is, or is conscious, in a way inhabits the younger body and see how much Nishimori (MC) has fought to protect her cause let's be honest she regrets her past and reading through the series we learn how much she has been used and abused, also she was fuckin raped. Nishimori (MC) may have started off with strange intentions not bad but changed and found a focus proving he loves FMC so I sincerely hope that what I said all the way above isnt true and that he will be able to face Hasagawa (FMC) and actually love her like he did and does and they do end up hopefully living happily ever after with all the friends he has made along the way. Also I wanna see the dude get jack ripped with muscles, flex bro supreme lol.