[Machine Translation] Erika's spirits are lifted when she receives a beautiful collar from Sada-kun for Christmas. However, she has not heard from him since the end of the year and the beginning of the new year, so she has to leave him behind... The long-awaited new school year begins. Erika is happy to see Sada for the first time in a long time, but after the break, she gets a red mark on an achievement test! Erika is in danger of not being allowed to continue her studies. However! Sada-kun, out of pity, agrees to help her with her studies. And the place is Sada-kun's room! Erika's tension soars with this unexpected reward, but...? ( Included works ) I'm not a clown!