

After cleaning the Calligraphy Club room one afternoon, Kiryuu Keiki found a love letter addressed to him on the club's desk. Eager at the possibility of finally getting a girlfriend, he opens the envelope only to find the words, "I like you" along with a pair of the sender's panties. With only these panties as evidence, Keiki narrows down the identity to the four girls who helped him clean the club room that day: Tokihara Sayuki the lazy third-year president of Calligraphy Club, Koga Yuika a library committee member of foreign descent, Nanjou Mao, Keiki's slightly tsundere fellow classmate, and most awkwardly, Kiryuu Mizuha, Keiki's clean freak of a younger sister. Among at least three of these girls, Keiki believes is the one who left him the letter and their panties so with determination in his heart, he sets out to uncover which of these seemingly unorthodox ladies will become his girlfriend!

Keiki Kiryuu
MAIN
VA: Hiro Shimono

Sayuki Tokihara
MAIN
VA: Ayana Taketatsu

Yuika Koga
MAIN
VA: Rina Hidaka


Mizuha Kiryuu
MAIN
VA: Kaede Hondo

Mao Nanjou
MAIN
VA: Iori Nomizu

Okita-sensei
SUPPORTING
VA: Suzuko Mimori

Ayano Fujimoto
SUPPORTING
VA: Anzu Haruno

Koharu Ootori
SUPPORTING
VA: Ayaka Oohashi

Shoma Akiyama
SUPPORTING
VA: Keisuke Koumoto

Hoken no Sensei
BACKGROUND
VA: Eriko Mizuno

Akuma Keiki
BACKGROUND
VA: Konomi Kohara

Joshi Ana
BACKGROUND
VA: Mayu Sagara

Tomo Hanama
Original Story

sune
Original Character Design

Itsuki Imazaki
Director

Kenichi Yamashita
Series Composition

Yousuke Itou
Character Design

Yasunori Ebina
Sound Director

Youichi Sakai
Music

Yousuke Itou
Chief Animation Director

Ayaka Oohashi
Theme Song Performance (OP)

Mia REGINA
Theme Song Performance (ED)

Kushagra Kushwaha
2D Design (eps 1-12)