Rose, a lone witch who lives quietly by the lake, is asked by the knight she secretly loves to brew a love potion—for someone else. Though heartbroken, she cannot refuse him, choosing instead to treasure the fleeting time they spend together gathering ingredients. And as the days quietly slip by, Rose finds herself clinging to each shared moment, dreading the day the potion is finally complete.

A school bus from Japan arrives in another world ruled by a sage who kills the adults and claims the students will train as sages. Apathetic Yogiri hopes to find a way home with classmate Tomochika, though his powers alarm her.