Hazuki Tsubame

Birth year: 1990

Protagonist of "Story 1 - Bottomless cave"

A girl who spent the summer break with her family at her grandparent's house. When Hayato invites her to go inside the jungle, she agrees to go out of boredom and curiosity.

Protagonist of "Story 2 - School, a close friend and me"

A year has passed by. It's the last semester before the beginning of summer break. Despite being hesitant because of what happened in the forest a year ago, she still came to take the test of courage, following the School Committee President's proposal.

Main character of "Story 3 - Crimson hair"

Spoiler

Main character of "Story 4 - Shimaigusa"

After her death one year ago, Tsubame remains as an onnen-rei (怨念霊 - a grudge-originated ghost) in this world until now. Every night without changes, she would go seek revenge to those people who have pushed her into this situation.