Saya breaks down after seeing Coconuts’s sketches comparing her and Hotaru. Kinky sex ensues.
Like Pochi says in the foreword, this isn’t related to the first three books at all, so you can enjoy it without reading the others.
[Pochi] Otona No Dagashi 4 (Dagashi Kashi) [English] [Flatopia]
I’m having some issues with getting the reader to work again. I’ll look at it more in the next few days.