"少女" (or "Shoujo",meaning "Girls" in Japanese) referring to Soshi (their name in Japan is Shoujo Jidai). The design was taken from their first photobook in Tokyo.
She also got the phrase "지금 앞으로 영원히" ("Now Always and Forever") tattoed, which is their fan chant.
sources: @miyoungstagram, soshicatalogue
do you have tattoos, omona? post them in the comments! if you are tattoo-less, do you plan to get one in the future? (seulgibear sis i expect you to show up in this post)