Ore ga Heroine wo Tasukesugite Sekai ga Little Mokushiroku!?

Rekka Namidare lived an entirely ordinary life until his sixteenth birthday, when a mysterious girl suddenly appeared from the future with a dire warning. She revealed that Rekka is destined to trigger a catastrophic interstellar war. Far from being a typical teenager, he descends from a unique bloodline cursed to constantly become entangled in extraordinary crises and perilous events beyond his control. This ancient lineage comes with a peculiar compulsion: whenever the heroine of a story finds herself in desperate danger, Rekka is granted one final opportunity to intervene and save her. Driven by this inherited fate, he repeatedly throws himself into impossible situations to rescue those in need. However, his relentless heroism carries unforeseen consequences that extend far beyond his own lifetime. In the years to come, the sheer number of girls Rekka rescues will grow to staggering proportions. Their intense affection for him eventually spirals into overwhelming jealousy, sparking a chain reaction of romantic rivalries so severe that it threatens to bring about the end of the world. Now, armed with knowledge of this bizarre apocalypse, Rekka must navigate the impossible challenge of saving heroines without inadvertently dooming humanity to destruction through their love.