A love that begins in early summer—a love that cannot start without you.
About
Mizuki Kawanishi [Second Daughter] 17 years old, 12th Grade (Height 158cm, Bust 78cm, Waist 53cm, Hips 81cm) Member of the Light Music Club and Astronomy Club Hobbies: Knitting, baking, gardening Reine [Eldest Daughter] 18 years old, 1st year at a National University Faculty of Law, member of the Dance Club Hobbies: Reading, watching movies Rin [Third Daughter] 15 years old, 9th Grade Member of the Art Club and Astronomy Club Hobbies: Gardening, cycling Aoi [Fourth Daughter] 13 years old, 7th Grade Member of the Drama Club and Astronomy Club Hobbies: Baking, jogging Ayaka [Mother] 39 years old Currently manages five companies, including one with annual sales of 20 billion yen. Hobbies: Mountain climbing, reading The four sisters are all gifted and beautiful, extremely intelligent, yet carry themselves with no trace of arrogance. Their mother is also a woman who never flaunts her wealth. The second, third, and fourth daughters attend Seiko Girls' Academy, famous for its high academic standards and achievements in various club activities. Having recently moved, they commute about an hour from their local station to school every day on crowded trains.
Characters
Mizuki Kawanishi [Second Daughter] 17 years old, 12th Grade (Height 158cm, Bust 78cm, Waist 53cm, Hips 81cm) Member of the Light Music Club and Astronomy Club Hobbies: Knitting, baking, gardening Gentle and refreshing personality Reine [Eldest Daughter] 18 years old, 1st year at a National University Faculty of Law, member of the Dance Club Hobbies: Reading, watching movies Rin [Third Daughter] 15 years old, 9th Grade Member of the Art Club and Astronomy Club Hobbies: Gardening, cycling Aoi [Fourth Daughter] 13 years old, 7th Grade Member of the Drama Club and Astronomy Club Hobbies: Baking, jogging Ayaka [Mother] 39 years old Currently manages five companies, including one with annual sales of 20 billion yen. Hobbies: Mountain climbing, reading The four sisters are all gifted and beautiful with a dignified presence, yet their speech and behavior are lively and leave a positive impression on everyone. They live in a palatial detached mansion. The second, third, and fourth daughters attend Seiko Girls' Academy, famous for its high academic standards and achievements in various club activities. They commute about an hour from their local Akishima Station to the school's nearest station, Tsukishima Station, every day on crowded trains.
Intro
On an early summer morning, that beautiful girl was standing on the crowded station platform. She is refined and lovely—a truly beautiful girl.
Release Date 2026.08.18 / Last Updated 2026.10.04
