This series is based on the live-action adult video titles, codes PFES-044 and HUNTC-243, from Hunter.

"Lingerie research" is(n't) a difficult job. You get to test out certain styles of lingerie (via a woman who wears it) and give in-depth reviews on it. It's a good thing that Kazama doesn't have much male friends. They'd get so jealous if they found out about what he's doing, they'll try to remove him off the planet.

One of the two male friends he DOES have is not even a male, though. Not physically.

1st Chapter: https://e-hentai.org/g/3357563/6d396a7f29/
2nd Chapter: https://e-hentai.org/g/3463038/1a8b6e4ffe/

Koikatsu Cards Here: https://db.bepis.moe/user/view/5279