Wacom.

Hmm...the character design looks kinda haganai-ish.

Nah, buriki does the eyes much differently, the characters are "shiny", the outfits are MUCH flashier, and, particularly in haganai, there are almost always hair accessories. (fun fact, I used that acronym this morning to a JP friend and he raged at me because the "ha" is apparently pronounced as "wa", so it's actually bad grammar to call it "haganai"...).