https://www.dlsite.com/maniax/work/=/product_id/RJ01315038.html

this is too dark, I don't like this,

Base +8, AhKai +6, setic +6

Quick synopsis.
Gacha game player is rolling for a hot new character, ends up with a low rarity character instead, and heartlessly sells her into slavery for a quick buck. She spends the rest of her days feeling sorrow at the fate of being a low-rarity character, while never letting go of the only wish she ever had, which will go forever ungranted: to have been wanted and appreciated by her summoner.

Base +7

this needs a sequel where she gets an ssr alt

Base +8