Looks like Ushio gave one of her rabbit stickers for the occasion. *points to the rabbit sticker on her turret*
Akebono said:
W-well, it's just that she really, really wanted us to match, it's not because I'm into that sort of cutesy stuff - they're just dumb! - but since she asked I let her put one on. Ah! Wh-when did you take that photo of me hugging my turret with the sticker?! HOW did you take it?! YOU SHITTY ADMIRAL!!!