15-year-old Nika Ogawa transfers in a new school after moving with her family in Tokyo. One afternoon, when trying to buy her favorite snack, she encounters an annoying blonde guy in a convenience store. But everything starts when her younger brother, Yukihiro, came home crying with a bleeding nose and bruised face, saying he was attacked by a group of guys who calls themselves 'Toman'. A loving and protecting sister, Nika finds herself barging in the middle of Tokyo's top gang meeting to avenge her younger brother, only to see the annoying blonde guy she met in the convenience store among the group of delinquents. -- Published: May 3, 2021