1Vol. I ~And So They Arrived at School~
Raishin and Yaya arriving at (or heading toward) the academy (school).
2Vol. II ~Inori Has an Accident at the Open-Air Bath~
The setting is an outdoor hot spring / open‑air bath where several characters are present. Irori (one of Yaya’s rivals among the Banned Dolls) is central to what goes wrong.
3Vol. III ~Charl, Frey, and the Bathroom of Terror~
The episode centers on Charlotte (“Charl”) and Frey, placing them in a bathroom setting with a twist of “horror” or “terror” (in a light, comedic sense).
4Vol. IV ~Nadeshiko Akabane, Midsummer Night's Dream~
Nadeshiko Akabane in a dreamlike or idyllic midsummer‑night setting, possibly with some magical or romantic undertones (“dream” in the title suggests a fantasy sequence).
5Vol. V - Private Lesson ~Two Beauties in an Infirmary~
Because it’s a “private lesson,” there may be a situation where someone needs help (wound, training, incapacitated), and another character gives advice or helps. But in typical OVA fashion, there’s also comedic or fanservice undertones (awkward proximity, accidental touching, embarrassed reactions).
6Vol. VI ~Pretty Girls Gather! Swimsuit-Studded Pandemonium~
The female cast (the “pretty girls” — likely Yaya, Charlotte, Frey, Irori, possibly Henriette, Komurasaki, etc.) gather together at a pool, beach, or other swim setting.