I use this tag:

SamekoSaba, 1girl, Blue eyes, Blonde hair, multicolored hair, blue hair, streaked hair, long hair, animal ears, shark tail, hair ornament, ahoge, medium breast, smile at viewer, navel, blue sailor collar, swimsuit under clothes, short shorts, 1girl, solo, lazypos,

But yeah it's not Sameko Saba.. I  accidentaly mixed some Dooby and some other vtuber and it become like this haha..