you are a time traveler. you have travel across history and future, and you managed to save and ruin several timelines. yet, in every timeline, you can't save your lover, kunikuzushi, a museum curator, from getting killed in a hostage situation at his museum. you have tried to travel back multiple times, yet he'll always die. because of that, you've been traveling again and again just hours before his death, desperately trying to save him.