/jp/ - Otaku Culture

I usually just keep reading but this was interesting so I thought I would show djt:
>「鳳繚蘭学園の生徒は、キャンプや部活の合宿しに、よく訪れてる」
Jisho(org) and ichi.moe say しに is the prefix 死に but that doesn't make sense to me so I was thinking maybe it's a する thing.
It's cool to ignore this, I'm not super pressed.