One Summer Story

Sakuta Minami is a 2nd-grade high school student. She loves to swim and is a member of the swimming club. Sakuta Minami also enjoys anime and, in particular, "Maho Sakan Otome Buffalo-Koteko." She meets Moji Shohei, who is drawing "Maho Sakan Otome Buffalo-Koteko" on the rooftop of their school. Moji Shohei is also in the 2nd grade of high school and he is a member of the school's calligraphy club.
One day during their summer vacation, Sakuta unexpectedly starts a journey to find her missing father. Shohei joins her along the way. During their journey, they meet various people and undergo personal growth.
(Source: AsianWiki)
~~ Adapted from the manga series "Kodomo wa Wakatte Agenai" (子供はわかってあげない) by Tajima Retto (田島列島).