This is a theory (mostly a wish of how the game went) that I was thinking about for a while, and after reading a Fanfic of a What If dedicated to the Ishimondo (in English because most are so sadly), here my idea

What if the second case never happened? (that Mondo never kill Chihiro) and in the third case did Taka somehow survive?

In short, we will see how Mondo will behave when he sees his bro/crush who almost got killed by someone, and Chihiro will be there to try to keep him calm and not let him screw his own.

To make you understand a bit like the trend of the story:
Some events are like in the game, Mondo and Taka became "best Bro" after the sauna (😏😏 .... I don't say anything but you all know what the fans thought)

The second motive doesn't exist, so no one knows anyone's secrets, but Chihiro can no longer keep his secret inside, and seeing how Taka and Mondo have bonded, he takes courage and decides to talk about it with them.
After the shock of the two boys and after Chihiro has explained his reasons to them, Taka and Mondo decide to help their friend and will keep the secret until he feels ready to tell all they other classmates

The explanation sucks I know, but I hope I explained myself well enough (XD)

Ps: I hope to be able to represent the personality of the characters well

But now I leave you to the first to the story I hope you like it

😊😊