Suki Dake Choudai

Although Ikuo Tachibana is a big fan of dogs, his allergies prevent him from relieving his work-related fatigue by spending time with them. He can only ever gaze longingly from afar at people walking their dogs.

A promising new recruit is about to be assigned to Ikuo’s department. Perhaps thanks to his boss’s charisma? It seems Ikuo has been appointed as the trainee’s mentor.
He picks up the work quickly and seems to be just as capable as everyone said he would be. But he keeps staring at Ikuo, and on his very first day, he even goes so far as to say he wants to be of use to him.

“Huh? Does he like me? …No, no, no way!” Just as he's thinking this, the new recruit suddenly pins him against the wall and declares, “I’m going to sleep with you in a week!”…?!