Nidome no Natsu, Nidoto Aenai Kimi

Nidome no Natsu, Nidoto Aenai Kimi, written by Hirotaka Akagi and illustrated by Booota, originated as a light novel published by Shogakukan in 2015. The story explores themes of regret and the desire for second chances, following a protagonist who uses a time-traveling opportunity to rectify a past relationship after the death of a close friend. It is firmly rooted in the emotional landscape of Japanese light novel fiction, where supernatural elements are often used to delve into adolescent introspection and personal growth.

The character design and atmospheric cover art were handled by Booota, whose distinct, airy style helped define the tone for the series' melancholic narrative. Upon release, the work was well-received by fans of the romance-fantasy genre, eventually leading to a live-action film adaptation in 2017. The reception emphasized its relatable exploration of grief and the complexities of high school dynamics, cementing its place as a notable entry in the 'time-leap' subgenre of light literature.