"You can be loud, Mana. The kids are more obedient, you know." By day, he works as a kind kindergarten teacher...but at night, he has a different side that will make you melt! Mana is a dispatch office worker tasked with walking her older sister's son to and from school every day. While she secretly finds these walks a little draining, the one saving grace is being able to meet her nephew's hot male kindergarten teacher Mr. Miyazawa every morning. Despite already having a boyfriend, a chain of events causes her to suddenly get intimate with the man she's been admiring from afar?! In contrast to his harsh words, his fingers tease her indulgently... She knows she shouldn't fall for him, but just can't help it!