Naisho no Kan’in ~Manatsu no Asedaku Koubi~ – Scene 6

Series Page
Video Link (Rule34 Video)
Length: Long
Stays Yuri: No Male (Male Watches) + Male Joins (Multiple Scenes)
Rating: 4

The MC spies on Asuna seducing and having lesbian sex with Chihiro while they’re outside. (He does not reveal himself during this part, he only secretly watches from afar.)

Later in the day, he goes to spy in on Asuna’s room and catches her having lesbian sex with Chihiro again, but this time they invite him to join them for a threesome.

There’s sadly no CG for the first lesbian sex scene, it’s purely text combined with Asuna and Chihiro’s character sprites while the MC spies on the scene.

This has the No Male tag for the first part of the scene and the Male Joins tag for the second part.