Tbh I really don't hear much of a difference between the album version and the drama mix for Eternally lolol
WHat IS the ending, if I may ask? (I need to pick up a copy soon...)
There's the ad-lib part right after the first chorus that she sings slightly differently as a less subtle difference. I'd say her vocals on the Drama Mix are slightly more emotional vs. the ones she chose for the album were more "safe" and reserved in a sense, probably for more accuracy from an expectations standpoint when it came to live performances, but that could also be me trying to pull more than just shit out of my ass haha
The ending is unfortunately nothing special, just Hikari / Simple & Clean again, guess they figured if we're invested enough to beat the game, then the music doesn't really matter at the end lol... although it kinda fits the mood better (than the P's CLUB MIX would have, to say the least lol). The Ray of Hope Mix on the other hand was to get people to play the game.
EDIT: Just read on her official site that she helped co-produce a new single for THE BACK HORN titled "あなたが待ってる" (Anata ga Matteru). It's set to release February 22nd. Does anyone actually know about how she ended up collaborating with them before, like for One Night Magic? Guess this is a bit of a return the favour kinda thing? Interesting the direction she's taking with her music career. Is this the first time she's co-produced a song for someone?