After Losing My Memory, I Travel Through Worlds to Save My Lover [Crossover]

To save her lover, who had fallen to their death, Xishi was bound to a system that let her travel between parallel worlds. But... She unexpectedly lost her memory. Not only did she forget her past, she also forgot who the lover she was supposed to save was. System: Your lover is in the Mafia. They've been working hard to expand the organization and haven't slept in four years. Xishi: I get it! Did all that stress make them stop growing early, leaving them only 160 centimeters tall? System: ... System: Your lover is in the Mafia and loves seafood, especially crab. Xishi: I remember! Did they name their family after seafood? It was something like... clams? System: ... System: Your lover is in the Mafia. They have the memories of countless parallel worlds and sacrificed themselves to protect the world. Xishi: Do they... also like cotton candy? System: ... Xishi: I know! I remember! It's a woman! She has a flower-shaped birthmark beneath her left eye! Later... Only after finally regaining her memories, at the end of her journey, did Xishi understand that traveling between parallel worlds wasn't just about saving her lover. More importantly, it was about ", ". *Reader's guide* 1. Pairing: Dazai 2. The title may change again 3. I'll add more after I finish the outline... Thesis: The only person who can save you is yourself