Usotsuki na Tetra
うそつきなテトラ
A high school girl named Ena is in a relationship with Kaito, who wants a casual kind of love. They enjoy being together and their life seems to be going well. However, Kaito is unable to completely forget someone else. A minor lie that he chooses to ignore begins to cause tension in their relationship. The story explores the gradual strain this issue places on their bond.