There really doesn't seem to be any story behind the GTA 4koma.
-I want a InuSakuya!
Sakuya Doggy - You mean a 'FlanxMari' book is real?!- It was a lie! She's not the purple bean sprout!
Purple Bean sprout - Patchouli Sakuya 'She said "If it goes well, I shall make a 'Blossoming Remillia' book next."'