The wife next door seduces me without panties

Takuo is a repeat student who is taught how to study as a private tutor by Mio, a beautiful wife who moves next door. Mio, who has the title of a former teacher, teaches very well, and Takuo looks forward to the time she teaches Mio about studying. One day...Takuo encounters Mio having an affair. What's more, Mio was taken off her panties by her affair partner and brought them home. Then, a <study without pants> begins with Mio and Takuo alone...