I couldn’t decide what to do for day 9 (a song you don't like anymore) so I’m going to change my mind about day 6 and post some more covers I love:
Hassun and Seiya covering Kinki Kids’ Mou Kimi Igai Aisenai - I’ll flail more about these two on day 30 but they sound SO GOOD together, especially on a belty ballad like this. Also, the end is so cute!!
Ae Group covering KAT-TUN’s Lips, i.e. rock but make it slutty
Kansai Jr shuffle group (feat. Seiya) covering Snow Man’s Grandeur - Seiya seems to have a thing for this song (he made Ae do it for their national tour also) and I can see why because it’s great for him.
And for variety:
Ryo covering TOKIO’s Akireru Kurai Bokura wa Negaou - I remember hearing he was going to do this and everyone being like “Can Ryo really sing a TOKIO song all by himself????” but he surprised us and did a very respectable job on a nice feelingsy song.