This is Kayoko from Blue Archive.
Disclaimer: Kayoko doesn't smoke. She is a good girl. This is just an image in my head.

Thank you to all my supporters in Fanbox: 青龙丿震怒, Lenji, Verve, TriteHexagon, Spinydesert, meerkatflyer, TEMPEST_ LTP, ???, Shuii, derp, luncliff