From Girls' Generation Scanlations:

LUCE Resturant's floor manager Kaji Mizuki looks delicately beautiful, but is draconian when it comes to training new employees. However, Ukimi Takeru, the new server from overseas, not only is undaunted, but also addresses the manager by his first name right off the bat, hugs him, and kisses him more than what is required of a greeting. Although Mizuki was outraged, his feelings changed when he saw how serious Takeru took his job.

1-2. Yasaotoko wa Venus

3. Tomodachi Over (Friendship Over)
A model who is afraid of women surrounds himself with an all male staff, but a newcomer may prove to be dangerous to the model's peace of mind.

4. Kakero! Ai no Tonakai

Ishikura is the manager of an event company. Izumi is a worker from a plant maintenance company that services Ishikura's firm. Ishikura does not have a good impression of the blunt Izumi yet for some reason, he could not resist him.

What would blossom between the twice-divorced Ishikura and green-thumb Izumi?