A) Did you know that anyone can tag galleries? B) It's in the title. C) Shinobu doesn't stop being Shinobu because she drank some blood and got bigger.
A) That I didn’t know, I’ll make full use of that feature from now on B) It’s not in the title C) If we’re arguing technicalities then all shinobu doujins should be tagged kiss shot.
But no, the tags aren’t there to be technically correct. It’s there to make sure people find the content they’re searching for. And since both forms of shinobu / kiss shot are polar opposites on the body type chart, the shinobu tag is used to indicate her loli form and the kiss shot tag is used to indicate her adult / teen form so the lolicons and the tit lovers can peacefully coexist. You’d know that’s how shinobu doujins are tagged if you’ve spent 5 minutes searching for any monogatari doujins.