A love Letter

Arata Sasaki is a motivated and spirited 16-year-old student who approaches each day with enthusiasm. He eagerly anticipates reuniting with his friends at school. After preparing swiftly for the day, he steps out, filled with energy, particularly as it is Friday. Upon his arrival at school, he opens his locker and is surprised to discover a love letter inside, not yet knowing the horrors he is to face shortly.