Hitohira no Koi ga Furu

There's a peculiar jinx at Haruru's school — if a couple spots the bullet train at 6 a.m. together, they'll be together forever! However, if they see it at 10 p.m., they'll break up! Haruru is dating Nagi, a boy from another school, and their love is just beginning to flourish. But what happens when Haruru accidentally sees the 6 a.m. bullet train with someone else!?