A boy gets a lottery System while running a fever and on the verge of death. He then dies, is reborn in Akame ga Kill!, turns into a trap, and begins an adventure. Whenever he meets the conditions or triggers a keyword, he'll get a chance to transmigrate.
Akame ga Kill! -> Overlord -> Date A Live & Kaichou wa Maid-sama! & Otome wa Boku ni Koishiteru -> Black Rock Shooter original setting -> Kampfer -> Puella Magi Madoka Magica -> Sword Art Online, Part 1 -> Love Live! -> A Certain Magical Index -> Sword Art Online, Part 2 -> Honkai -> And You Thought There Is Never a Girl Online? & some gaming VTubers -> KonoSuba (Kazuma's perspective) -> Detective Conan -> Completed...
P.S. My writing style tends toward narration, and it can be a little toxic at times. I occasionally change the synopsis... The reader group for all my books is "695263802". You're welcome to join.