ideas for books

I dreamt last night about archer shirou emiya from fate beeing in avatar the last airbender, and people finding it weird that he was a "sword bender" and complaining that it wasen't an actual element, so i woke up and was like "why not?"

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I will probably make archer a reincarnator, cause as believeable as it is for zelreach to just toss the original archer into another dimension is, i want mc to claim to be a bender instead of a magus

I was thinking for mc to spawn next to appa when katara frees aang and appa from the ice, have aang not notice mc was there until he checks on appa, have mc claim his boat got wreacked by the storm and that he was struggling to keep swimming before something big fell from the sky right next to him, and even if aang diden't notice mc was there, aang kinda saved his life (convoluted, i know, but i diden't want aang to be blaming himself for almost killing someone)

I think i will have mc NOT have knowlage of the world of avatar, but rob fed him the basics

I will most likely give mc the full capabilitys of counter guardian archer, but i am unsure if i should make him have the aparence of counter guardian archer or teenage shiro emiya