The official alternate costume of hololive's Inugami Korone that debuted as part of a collaboration with SEGA, the year-long SoniKoro 2022 collab, as seen in post #5458319.
Becoming an official ambassador of Sonic, Korone's eyes turned green and her hair turned blue to match with her Sonic the Hedgehog hoodie. She wears a black shirt with Sega's logo on it and with no pants. She also carries a Knuckles the Echidna plushie on her right arm.
This tag implicates inugami_korone (learn more).