Part of an Inner Soldier charm set I'm designing! Second one, Sailor Mercury in her first manga uniform! The earrings definitely surprised me in their color (I was aware that she always had three in the manga), but it matched across multiple artbook sources (kind of a miracle given Naoko was hardly consistent at times). Had a bit of trouble getting the colors right, but those bubbles came out beautifully and I'd have to experiment a lot to get them right again!

Art (c) MugenGinga
Sailor Moon (c) Naoko Takeuchi et al.