Yes, ツインテたいがー per the artist, とらドラ! per the tags. But you're right--it looks more like Kuroko than Taiga. post #413937 ...but Taiga it is, in twintails and a cute maid's uniform, looking like she's planning the logistics of the perfect murder.
Maciste said: Watch the preview for episode 23 in episode 22 of Toradora and there you'll see her dressed exactly like this/get the confirmation that it is Taiga.
I saw that and now this and I'm almost afraid to watch the episode. I swear if I see Taiga with twintails in maid cosplay it'll give me a heart attack...