[Anime Crossover] Heartbroken, So I Can Only Destroy the World

Matsuo Kokona is a girl whose fate is tied to the world. Whenever she gets her heart broken, the world begins its countdown to destruction. Every time a timeline explodes, she is reborn into another universe, carrying all her accumulated memories with her. Those memories hold countless endings she has experienced alongside the people she loved. A note before reading: There's nothing you need to know. It's just a story about a girl whose world is destroyed every time she gets her heart broken. Although she could escape disaster if only her romance worked out, things never go her way. After becoming the unflappable type, she travels through all kinds of worlds. After a heartbreak, the girl is forced to switch timelines. The only way to switch is for her original world to be destroyed. Theme: All kinds of tragic endings