Hmm, that's a pretty insane hitbox, even more when you consider it will probably push her forward during activation, increasing the range even further.
Someone on the twitter thread said it was most likely hiroi's move specifically but it is not an uncommon fighting game move in general asset #23819199
Yes, closest reference would be Miyako Arima from Melty Blood. Her 5C in Type Lumina have similar hit and hurtboxes and same button
