[Crossover] What If a Shinigami Became a Sword Master?

Although his surname was Shihouin, Shihouin Gen was practically invisible in his own family. Shihouin Gen knew he looked a little strange, so he always kept quiet and to himself. Then one day, he arrived in another world, one without Hollows, Soul Reapers in their Soul Reaper uniforms, or his family... "Master, take your mask off before bed, or it'll be uncomfortable." "Master, would you... would you like to pet little Tiger?" "I want to buy some black nail polish. Would that make me cuter?" No CP, everyone has one-sided feelings, with some familial affection and, well, other stuff. For now, the plan is to include Bleach, Touken Ranbu, Nura: Rise of the Yokai Clan, Jujutsu Kaisen, and Bungo Stray Dogs. That's all! (Second version of the blurb) Gojo Satoru: Hey, Megumi, look! I found a kid! Fushiguro Megumi: Please don't kidnap children. Take him back where you found him. Ranpo: There really are people who travel through time and space? Akutagawa Ryunosuke: Why is there another person with Dazai? What is that weretiger doing? The Third Hokage: You don't seem to be... a yokai. Toko: My, are there really so many shikigami? Nemu Kurotsuchi: Well, it's been a while. Swords: ??? Put our master down! What do you people think you're doing? The above isn't in order of appearance. Some worlds may not get much focus. I probably won't add any more. Theme: Saving one another