1-3) The Nature of Love
The cool and beautiful Tomoaki Kayama works for a major corporation. When his hard-working, reliable subordinate, Keiichi Saiki, falls ill, Tomoaki's surprised to find the usually smart and handsome Keiichi completely disheveled. What happens later that night changes their relationship forever. Tomoaki always keeps to himself to protect his feelings, but Keiichi is so devoted, he begins to think...... that maybe he can let his guard down with him....

Included one shots

4) Summer Contrail
5) Weekend Melancholy
6) Tyrannical Passion

(Source: Renta!)