For "Oh My Archon!!!", I would love to see Lucifiel meet Heizou. I think he's the last Inazuma playable male that you haven't written. I do think that Diluc may or may not go to Inazuma for business purposes. Or the other Archons may be interested in the new Archon that's replaced Ei.
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...I forgot Scaramouche has connections to Inazuma as well.
Hello, Author-san!! Hope you are doing well, are you still updating any of your stories? Your writing got to be one of the most satisfying thing I have ever read and I was hoping I could read something written by you again.