The Sweet Marriage of Classmate Bei Downstairs and Professor Nan Upstairs

[7-Year age difference + single heroine 1v1 + double cleanliness + dad's sweet pet + daily ease + preference to protect shortcomings + two-way running + double secret love + high sugar and no abuse] [Pure desire ceiling abrasive little goblin vs special petting monster, gentle and strict husband] [Widget vs. Velcro] During the summer vacation, Nan Shannan, who lived upstairs, forgot to turn off the water turbine and flooded Beitian's house downstairs. After school started, Bei Tian became Mrs. Nan. When she wants to flirt, he loves her. A match made in heaven. The couple's great ambition is to become a baby daddy and sweet mommy as soon as possible. From then on, during the day he was a professor and she was his student. At night, Professor Nan transforms into a Tie Tie monster. However, despite being doted on every night, the couple could never get pregnant... The stepmother wants to embarrass her, but Professor Nan is a maniac who loves his wife and loves to protect his shortcomings. His darling, no one could lay a finger on her. No matter how bitter the world gave her, he would give her ten times the sweetness.