Lately I noticing that some making tags related to their support cards that is basically wearing their casual outfits. While those (playable/train) are too obvious. While I understand the notion of "adding a tag for character's alternate unit etc" but on this is kinda outrageous.
For example: el_condor_pasa_(sparkling_beyond_infinity), zenno_rob_roy_(rhodonite_and_dreamstone)_(umamusume) and Machitan's is just her causal outfit. I think I saw another for Nishino Flower's but I hadn't check that up.
Here is the link of the currently presentable list who had a casual outfit in game which is likely to be updated.