"昔阿蘇神社にあった宝剣は、なぜか今、ここにあったりして。蛍丸、推参！壊れたところに蛍が集まって修復したっていう伝説があるから蛍丸ってね"

"The treasured sword once in the ancient shrine of Mt. Aso, is now somehow here. Hotarumaru's arrived!According to legend, I was once completely repaired by fireflies, and that's where I got my name from."
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 Okay so this here is my son Hotarumaru(His name stands for Firefly) he was a giant pain in the ass to make
Nobody ever looks at his backstory and only his damn thighs
He was once a treasure in a shrine but because of a war and sword collection afterwards,he was never to be seen again,and no one even knows where he is to this day
Honestly it makes me so sad that he is a confirmed lost child