Hmm, new GP-KIDS doujin perhaps?

now it's Reimu's turn of taking care of loliSanae? Oooh, I really hope so! She needs to repay the favor after all

You are not alone I will willingly squeal to see that with no regrets

So has been any word on whether or not this is an actual doujin?

mangadaemon said:
So has been any word on whether or not this is an actual doujin?

I don't know about one from this artist, there is the one done by Personal Color called The Young Girl and the Little Girl of Moriya, this artist GP-Kids did do one with a chibi Reimu that Sanae looked after but as for this I haven't heard anything