Let me say this, Shimakaze in AL is always a bunny girl ever since Azur Lane: Crosswave release. Crosswave was developed by idea factory, it was released in 2019, and Genshin came a year after. no wonder you got 3 down vote.
As a bonus fact, Shimakaze is one of the starter ship in Crosswave along with Suruga. Suruga is introduced first in crossover event and this is just addition to new crossover from Yongshi and Idea Factory with Yostar as a publisher approval. Shimakaze character right in AL is reserved from Idea Factory, which is probably the reason it took times for this UR came for.
Let me say this, Shimakaze in AL is always a bunny girl ever since Azur Lane: Crosswave release. Crosswave was developed by idea factory, it was released in 2019, and Genshin came a year after. no wonder you got 3 down vote.
He is referring to the afterimages behind Shima, it's just a common anime trope. Keqing is neither a bunny girl nor a cat girl.