Asaba-sensei no Ichizuna Junai
Mitsumi Koshiba has a complex about her childish appearance.
Trying to become a more sophisticated woman, she joins a tea ceremony class run by Asaba-sensei.
The teacher is so handsome that people turn their heads to look at him, and it's making her heart flutter all the time.
But his sweet voice whispering in her ear, the large hands that wrapped around her, and the sexy glimpses through the gaps in his kimono made her feel like a desirable woman, as Mitsumi's body reacted to his touch.
"I've been trying to hold back... from touching you, Sensei."
Hearing that, Asaba-sensei finally lost control, as their bodies come together.......
(Source: Opal Comics, translated)