Found that one a while ago but only pepe cared I guess ;_;
There’s more of this in the nicovideo list!
Key Music Fan Covers
One of my favourite arranges is definitely this one of Slow Curve. It’s suuuuper chill.
I loved it so much I had to go look for more, but this guy only made one more in the same style.
These used to be on the site http://thankskey.mkplus.info/, which had a load of fanmade arranges and remixes (most of them were bad tbh), it was a kinda cool site, but looks like it’s dead now 
