The scene where he was 'dying' at the beginning, he probably wasn't. He only said "when i leave" or "if im gone" it doesnt sounds like death. Hes probably being sent to his original world and allat blood puking was side effect before he completely transmigrated over. He thinks because his job is done hes finally being sent to his original world and keep reminding lil bro to stay sane. The thing is lil bro aint leaving his master alone. He probably would find a way to find him even to go to another world with whatever dark magic he could find and the ending they probably gonna meet in modern world with their age gap being somewhat better. And yay happy ending. Its basically the Kill the Villainess ending route.
The scene where he was 'dying' at the beginning, he probably wasn't. He only said "when i leave" or "if im gone" it doesnt sounds like death. Hes probably being sent to his original world and allat blood puking was side effect before he completely transmigrated over. He thinks because his job is done hes finally being sent to his original world and keep reminding lil bro to stay sane. The thing is lil bro aint leaving his master alone. He probably would find a way to find him even to go to another world with whatever dark magic he could find and the ending they probably gonna meet in modern world with their age gap being somewhat better. And yay happy ending. Its basically the Kill the Villainess ending route.