Emuken!~ Minnade Yareba Kowakunaiitsu~

Manato, Haruki, Shuta and Yusuke become friends when they experience a unique medical exam.

The story span over several oneshot chapters:

1.Emuken! Zenkoku Danshi XX Kensa (えむけん!全国男子××検査)

2.Emuken 2 Danshi Yonin Warikan Ecchi!(えむけん２男子四人ワリカンえっち！)

3.Konya, Ojamashimasu

4.Cuz I'll Be a Top today!!

5.Reversible x Reversible

The four boys continue their friendship and become even closer.