Anime Crossover: A Perfect Ending to a Near-Death Start with a Shibari Blade

A crossover set in an alternate universe. The main story follows the protagonist as he grows closer to the girls, with a little of Conan's main storyline woven in.

He always goes against the crowd. When Nino was in danger, no one else went near her, but he alone pushed against the tide to protect her.

When a mudslide struck, he was once again the only one who went, ultimately rescuing Kaguya from where she was trapped.

The moment he woke up, he dragged his badly injured body back to that mountain. Even though he had reached his physical limits, he still refused to back down.

Someone asked him: He'd already done more than enough, so why keep doing this?

His answer was: Because it's my responsibility...

Yukino: He's a very dependable friend, but when it comes to romance, there's no doubt he's a total womanizer!

Kaguya: I might like him just a tiny bit, but why did he steal my first kiss and still not confess? He's so infuriating.

Miku: It's so nice that Yuu likes the same foods and things I do...

Ai: Don't get the wrong idea. I'm only getting close to you because I want to see how your story ends. After all, judging by the memories you transmitted to me... (smirks)

Nino: This is so frustrating. I've been coming on so strong, so why won't you accept my confession?

This isn't a System story. The System blew up from the start. (The protagonist has superpowers.) It only gave the protagonist his cheat ability. Since the story is set in the Detective Conan universe, it mostly stops keeping track of time midway through, but it will still cover all kinds of events, such as fireworks festivals, cultural festivals, and sports festivals.