Feelings Taiyo struggles to adapt to life in the Yozakura house since it is filled with deadly traps he must avoid or disable in order to do simple tasks. Upset by his weakness, Taiyo asks Mutsumi's martial artist sister Futaba to train him. She agrees but only if he can survive the house on his own for one month first. Taiyo applies himself to surviving the house and struggles so much Kyoichiro even stops attacking him as he finds Taiyo's pain amusing to watch...