Natsu no Hatsujou, Kimi to Seishoku

“I started masturbating even though I was in class!” What is Kissy, a strange disease that affects adolescent girls??
"Kissy'' is a mysterious disease that causes numbers to appear on her wrist and causes her to get into heat only when the numbers are odd.
The girl, Hinami, develops kissy!! Hinami hid her illness from her boyfriend, Sawano, but due to some random chance, Hinami suddenly got into heat during her class!?

Included works:

1. Let me cum twice! (Episode 1)
2. Let me cum twice! (Episode 2)
3. Let me cum twice! (Episode 3)
4. Shinigami-senpai and Angel-kun
5. Let me cum twice! (Episode 3.1)