Classmate (♀) to Meikyuu no Futekisetsu na Kouryakuhou

It has been decided that Nishi High will close in two years time. Since then, the student population had dropped to a total of only seven. Hazakura Motoya, one of the remaining students, decides to stay for the free ride through high school. Suddenly, everyone is shocked when they receive three new transfer students, Kayama, Mizumura, and Toujou, girls who are actually members of a special military division. Soon after, Motoya and the three girls witness a giant tower suddenly appearing on school grounds. Motoya is chosen by destiny to enter the tower with the girls in order to uncover the mysteries of the tower.

27 chapters

• Chapter 26.5 — A Story That's Improper For The Main Story?
• Chapter 26 — Improper Capture Method
• Chapter 25 — Improper Relationship
• Chapter 24 — Pursuit
• Chapter 23
• Chapter 22
• Chapter 21
• Chapter 20
• Chapter 19
• Chapter 18 — Stimulation
• Chapter 17 — Attraction
• Chapter 16 — Place of Connection
• Chapter 15 — Contact
• Chapter 14 — Sense of Distance
• Chapter 13 — Embrace
• Chapter 12 — Separation
• Chapter 11 — Difference
• Chapter 10 — Loss
• Chapter 9 — Emergency
• Chapter 8 — Visit
• Chapter 7 — Motoya's Decision
• Chapter 6 — New Self
• Chapter 5 — Changing Days
• Chapter 4 — Advice
• Chapter 3 — Link
• Chapter 2 — Invasion
• Chapter 1 — Isolation