It's been 10 years since he took a break from love... "How do we get girlfriend again?" Looking for a mistake in the love of a 35-year-old man! Mukai-kun (35), an office worker living with his family, hasn't had a girlfriend for 10 years. The last ex-girlfriend, Miwako, whispered "I want to protect" and was stuffed with "What is protection?" and dumbed. Mukai-kun, who was far from "romance" and "marriage" due to his unfamiliarity with his ex-girlfriend, seems to start thinking that a dispatched employee, Nakatani-san is cute?! Mukai-kun's love mistake search started, confused by the gap between his ex-girlfriend and his new encounter! Nemu Youko's latest work that realistically depicts the gap between men's and women's love affairs!!