Please help me find this manga!

From what I can remember, the MC is an overworked salaryman. He’s so exhausted after working overtime he falls asleep right in the doorway of the apartment, without realizing he accidentally went to the wrong apartment instead of his own. After waking up, he apologizes and rushes out to go back to work. Last thing I remember, The ML ends up being his new boss.

It’s a short manga, like 5-6 chapters.