No One Told Me My Passive Boyfriend Was Such a Schemer (2019)

Soushokukei Kareshi ga Tonda Sakushida Nante Kiitenai

Scared of men, this is Nonoka's third year as a member of the working force. She was troubled by her inability to talk properly with men, but she somehow ends up dating her superior at work Yuzuru Aihara, well-known to be extremely passive! Inexperienced in the matters of love, Nonoka doesn't know how to react to his gentlemanly behavior and at times daring and manly attitude. Even though he acts passive in public, he boldly approaches her when they're alone, baring both her feelings and body...

(Source: Renta!)