Synopsis: The Hatsukoi Chronicle

Mustuki Yoneya, a high schooler, feels insecure and envious when her best friend and constant companion, Nishio Kyuteki, starts showing interest in an attractive older student. She sees the senpai's charm as a threat to her desire for an unbreakable bond with her closest ally, so she sets out on different endeavors to become Kyuteki's main object of affection.