Hisashi and Nana, a mandarin duck couple, despite their age difference. Hisashi's unemployed nephew, Daiki, lives in the house of these two. However, Nana is perplexed by Taiki's arrogant behavior, such as bringing in her friend and showing her naked body on purpose. Eventually, Taiki finds out that Hisashi is having an ED and forcibly approaches Nana...
