Seto No Hanayome episode 21 English Subbed Episode Title:10 Things I Hate About You.Episode Description:Nagasumi receives a love letter from the Class Rep and becomes instantly overjoyed, as it is his first love letter he has ever received in his life due to lack of popularity. Maki confiscates the love letter from Nagasumi's pocket, and Lunar recites it aloud for all to realize. After Ren finds out that Nagasumi only wants to be more popular, she gives him a sample of a potion to temporarily solve the issue. However, this causes all females who see him to fall in love with him and all males who see him to develop envy against him.