minato aqua (2nd costume)
The original bikini official alternate costume and third chronological costume of Minato Aqua, as seen in post #3859402 and post #4879507, first featured in the Hololive Idol Project 2019 Summer.
It's a white and blue striped bikini with a halterneck front-tie top.
See also
This tag implicates minato_aqua (learn more).
