https://www.dmm.co.jp/dc/doujin/-/detail/=/cid=d_480517/

Totally copied from momokumo.
SAD:(

Base +6, lkoofu +10, ddvdv123 +6, Baraduke +6

总感觉，画得有点像桃雲老师

Base +7

[Synopsis]

The protagonist Watanabe works as a librarian.
One day, there are no upperclassmen or underclassmen and he is left alone with Momoka Fuzuki, whom he secretly has feelings for.
Feeling both excited and nervous, he borrows a book from Fuzuki and tries to read it, only to find out it's an erotic novel!
When he casually asks her about the erotic novel... this is the story of him secretly doing lewd things with the earnest and high-achieving heroine.

Base +22, nuts987 +13, krvn64 +15