[Crossover] My Guardian Sweetheart Is a Sword

Amamiya Hane, a boy who loves the way of the sword, sets off on a one-way journey to save the world when a strangely patterned egg appears in his bed one day. A certain childhood friend: You're far too careless! A certain beautiful club president: Is Hane cosplaying? A certain boy who can see yokai: Amamiya is really a very dependable person. A certain elementary school student: That guy, Amamiya Hane, completely defies the laws of science! A certain famous detective: Amamiya Hane? The snacks he makes are delicious! A certain bandage-wearing guy: Hane's transformation really isn't a supernatural ability? I'm so curious. A certain god with psychic powers: At last, I've found someone who can share the burden of all those eyes watching me. Amamiya Hane: I really just want to practice swordsmanship with my grandfather! Why did things turn out like this just because I took a nap?! Amamiya Oto: Big brother looks so beautiful when he transforms! I have to take a picture to remember it! "This idea suddenly popped into my head this morning. I wasn't planning to write it, but I just couldn't keep my restless heart under control, so I'm leaving a placeholder here for now. No idea when I'll actually start writing it." Left here on 2021/12/29 Theme: Hold on to your convictions. No matter how great the difficulties you face, you can overcome them.