Based on the CG collection by Sakusei Kenkyuujo (搾精研究所).

Yamada is afflicted with a strange disease and has to ejaculate once every three hours as a result. However, he has now broken both hands and ended up in the hospital. As a result, he has to ask the nurses in the hospital to take care of his needs.

1-2. Chapter 1 (第一章); Comic Ananga Ranga Vol. 73, 74
3-4. Chapter 2 (第二章); Comic Ananga Ranga Vol. 76, 77
5-6. Chapter 3 (第三章); Comic Ananga Ranga Vol. 80, 82
7-8. Chapter 4 (第四章); Comic Ananga Ranga Vol. 85, 90
9-10. Chapter 5 (第五章); Comic Ananga Ranga Vol. 93, 96
11-12. Chapter 6 (第六章); Comic Ananga Ranga Vol. 98, 100
13-14. Chapter 7 (第七章); Comic Ananga Ranga Vol. 105, 108
15. Chapter 8 (第八章); Comic Ananga Ranga Vol. 112
16-17. Chapter 9 (第九章); Comic Ananga Ranga Vol. 115, 118

Note: A live-action AV adaptation (28ID-038) was released on October 23rd, 2020.