Reina, whose husband disappeared 20 years ago, worked hard and raised Tatsuya, who was a student, brilliantly. - She sent Tatsuya to college, got a job, and grew up to be a good member of society. - She was given a hot spring trip by Tatsuya with her daily gratitude. - Aside from Reina, who is obediently delighted with her, Tatsuya has made a certain determination. - He confesses that he likes Reina as her opposite sex ...