Imagine Yorihime summoning other Greek gods though... Remilia stops by for a rematch, and she's greeted instead by Apollo.

Huh... Apollo was only shot down, right? So not quite outright killed, possibly just really weakened... Wait, Hecatos is also another name for Apollo. If we're gonna play the conflation game here, then Hecatia IS Apollo – and she hates Cháng'é's husband 'cause he shot HER.