An innocent schoolgirl, Shinre, dreams of becoming an architect. Her teacher, Ooki, overhears her talking about this dream and decides to take her to a designer hotel on their way to school to satisfy her intellectual curiosity. Shinre eagerly explores the interior. However, her actions unintentionally reveal her panties or cleavage, seemingly inviting men. Seeing this, despite his fear of losing social credibility as a teacher, Ooki crosses the line. Tormented by guilt, Shinre tells him, 'I want to know more about the world I don't know,' and provokes his desires, leading them to entwine their bodies again.
