been looking for it for so long but I just can't seem to find it anywhere
these scans are from the same doujin apparently but reverse search brings nothing up
The only info I could find is probably the one you have already:
Game heroine anthology adventure daughter (from google TL)
Category: doujinshi
Circle: A · O · I
Artists: Sagano Yuuji (Cover), Kamifuji Mikeko, Shinshin, others.
Release Date 2014-02-23
I looked at the usual places (exhentai, sukebei.nyaa, nhentai, tsumino) and they don't seem to have it yet.
>>14566157
ah well thanks I guess
at least now I know the cover artist which is something