The protagonist is in his thirties and is a teacher at a girl's school. He only wishes to train his students well and help them graduate. That is, until a student of his starts showing signs of interest in something other than her studies.
Yukino Chitose had just entered Kunoe Girls' School when her mother eloped, leaving her to fend for herself and manage the onsen inn in which she lives. It isn't long before she is raped by a tourist from Tokyo and kidnapped by some men seeking to evict her from her inn.