[Crossover] No Proof

I'm sure everyone here already knows who I am, but I should introduce myself anyway. Um, I'm Fushe Yangming, 25 years old, and I'm a... detective.

Getting caught up in a supernatural incident because of a mysterious motorcycle disappearance: is that just as likely as getting caught up in one because of a motorcycle crash? Anyway, I've been dragged into another situation where I can't contact the outside world, and once again, I'm facing mortal danger.

...Will there be a reset this time? Even if I'm curious, I can't exactly choose to die. Besides, somehow, an unexpected romance has taken shape.

That said, please, some god or higher power, have mercy on me. This is a disaster that belongs in a whole different genre.

Reader's notes:

1. I started writing this on a whim after finishing the game. For now, it's a crossover with Death Mark, NG, Danganronpa, Katekyo Hitman Reborn!, The Disastrous Life of Saiki K., and FGO.

2. There are romantic inclinations between crossover characters (and even confirmed relationships), but since I like all the characters I've included, there may be bizarre plotlines involving NTR when A and B have an ambiguous relationship. This story has absolutely no boundaries, so if you can't accept that, please leave now!

3. The protagonist is Fushe. The ex-girlfriend (?) is Mashita. I don't know who the mastermind is either. I don't know if there will be a pairing in the end.

4. The rough intelligence ranking is protagonist > other characters > mastermind > me = all of you. If any ridiculous, brainless plotlines appear, please just ignore them completely. I'm begging you.

Theme: On how what isn't proven can become evidence in a case.