Childhood sweetheart + double-faced male protagonist (elegant professor/wild ranger) + urban workplace female protagonist.
The key to the heroine's house is missing and she cannot enter the house.
Male protagonist: "Why don't you come and stay at my house."
Hostess: "What are the conditions?"
Male protagonist: "Invite me to dinner."
Didn't you say you'd like to invite me to dinner? Why did you kiss me? ! ! ! ! ! ! ! !
