I looked to see any potential outfits but surprised to find both Sena and Hiro don't have any cards that depict "casual'. Sena has at least some classier stuff like the Cosmetic and Chii Yabou pre Evo images but Hiro rarely dresses up otherwise. Besides this Santa outfit.

Here's hoping they just give her the karaoke Collab Hitler.outfit and call it a day.