Earendel

I think it came in at just the right difficulty. Just be careful with the late run.

Personally I think this one fits 19 better, Full Moon should be the 20 instead

This song is quite overrated. Even though it's a long run at 180 BPM, with this length and a generous early section, it can't even touch the top tier. I'd rate it as slightly easy even among the mid-high range. There's a clear difficulty gap even when compared to Broken Karma. It's a mid-BPM run song with a very appropriate difficulty, so don't be intimidated just because it's rated high... Separately, it's a masterpiece, so I highly recommend it.

It's exactly a 20, why was it underrated?

it was ok for a 20, for players entering the 19 range they might find the run at the end too long, so be aware of that