The Obsessive Love of a High-spec Longtime Friend ~Sweet and Burdening Disciplinary Sex~

Yui, our corporate drone heroine, was enjoying her day off when suddenly an unfamiliar man turns up on her doorstep. Then, out of nowhere, he kneels before her, and asks for her hand in marriage…

It turns out that he’s Haruka, an old pal that she used to hang out with.

Haruka tells her that she is everything he could ever dream of in a partner. The perfect woman.
But… hold your horses buddy! One step at a time. How about going out for a date first?

The two head out together, but Haruka is so different now that it bewilders Yui and…
As if to fill the gap in time that they have been separated, he desperately desires her…

Source: DLsite