Hi, this is the first time I'm using novel updates to search for a novel and first time going to a forum, so please bear with meಥ_ಥ I'm looking for an apocalypse bl, I've read it before. The mc either transmigrated or got reborn. So the mc has a sister(? Female relative) who got rebirthed. Basically before the mc's soul got into the young master's body, the young master was a bitch, in the memory of the female character(his sister? relative? ) he clung unto the female character's boyfriend since he was the strongest one but he ended up getting, uhm, I don't remember after that. I remember a few more stuff, the apocalypse started when the mc went to school to take a test. Their family is related to the military. The mc started sparring military people from their family? I'm so sorry, the explanation is so messy T_T I just hope it's understandable enough to jog your memories, if you do know the novel I'm talking about. Also, thank you in advance.