A Mother's Confession... I Want to Kill You! - S1.E7

At the amusement park, Noboru tells Rika, "To be honest, I don't like the person you've become. I want you to go back to being the cheerful person you were when we were 8." Hearing this, Rika begins to want to change herself. Rika tells this to Nobuko. Nobuko wants to know the cause of Rika's depression, and asks Rika to tell her. However, Rika can't bring herself to talk about it, that she thinks she's an iguana... Mami confronts Yuriko, asking her why she's so mean to Rika、which causes Yuriko to stay in bed all day...