Tsumaranai Otoko

From PresenceDear:

1) A Boring Man
After getting dumped, Hashimoto, an ordinary businessman, is approached by a popular and successful co-worker.

2) Sweet Room
Kotobuki is famous on campus for his beauty and brains. Will he ever find a roommate who isn’t disillusioned when he sees what Kotobuki is really like?

3-4) Let’s Tie Hands Firmly
When Atsushi quits his job in the city and returns to his hometown, he finds his younger friend, Satoru, all grown up and a little distant.

5) Always Hand in Hand
Sequel of 'Let’s Tie Hands Firmly'.

6) A Troubled Man
(continuation of "A Boring Man")