Natsuo joins the Takenaka Dojo, where she starts training under pro MMA fighter Karin Kontani. Each day is a tough grind—endless training exercises, grueling grappling sessions, getting “volunteered” to be Karin’s demonstration dummy for her class on takedowns, and having her butt handed to her by snarky fellow first-year Haruka Kirido’s jiu-jitsu…but for once, she isn’t bored. When the team goes to support a dojo member competing in an amateur grappling tournament, they’re shocked to see her completely outclassed by none other than Yuzuko Mawatari, competing for Team Cordeiro. When the tournament ends in a spontaneous face-off between Team Takenaka and Team Cordeiro, an eventual clash seems inevitable. To help her get prepared, Karin books Natsuo her first amateur fight…