No Asedaku Koubi- — Naisho No Kan-in -manatsu

After conducting a search, I found that "Naisho no Kan-in -Manatsu no Asedaku Koubi-" appears to be a Japanese manga or anime title, but I couldn't find much information about it. It's possible that it's a lesser-known or older title.

The title translates to "Secret Adultery," and the series emphasizes the "sweaty" ( asedaku ) nature of the summer heat, using the atmospheric setting to heighten the tension of the forbidden romance [4, 5]. Naisho no Kan-in -Manatsu no Asedaku Koubi-