The first of the C81 GUST doujins is the K-on! one. Though it was decided with the flip of a coin...
Ritsu's new plan to help with Mio's shyness involves sex. Massive amounts of sex.
Collab with Team Vanilla.
Quite the contrast with our previous K-on! doujins, right?
And for the ones who want them, we have the RAW version too.