Therapy Game Vol. 2 (manga)

Shizuma finds out about Minato's plan--and subsequent wager--to seduce and then dump him. But when he rushes to Minato's apartment, an unknown man opens the door! Meanwhile, Minato is stuck wavering between his ever-deepening feelings for Shizuma and his deep-seated fear of falling in love. Can these two overcome misunderstandings and suspicion, or are there simply too many obstacles?