I like the melody. I felt the keys sounded good but were a bit static and needed more dynamics. While I like this song, it didn't hold up to repeated listens as well as some of the others.
Challengewise: You said, "The transition back to C involves Adim -> D7 -> C. Which is downward. I hope you didn’t mean to specify something else that isn’t a technical definition of modulation!" Congratz. Your transition is downward. I just quoted the definition from the music dictionary but I'm gonna do it again. "1.The process of changing from one key to another." or "2. In electronic music, the term is applied to a change of frequency, amplitude, or other changes of similar nature possible through electronics." And you used a key change in your song so I'm inclined to think you knew a key change was a likely goal of the challenge. However, you establish the key of C and then go up to Gm in both chords and melody. That's an upward modulation in my book.

It sounds to me like you had some time constraints or other obligations. That keeps happening to me, so I'm sympathetic. But this was still an easy choice for last place, because it's obviously unfinished. The arrangement of piano, bass guitar, and voice is certainly valid. But your fake piano is lacking in expression and you either played it live on a keyboard without much touch sensitivity, or you did a MIDI thing without touching the velocities, because the piano sounds conspicuously artificial in a way that doesn't serve the song. Your vocal need some work as well, as we can hear you searching for the right note in a few places. The lyrics really are amazing, though. I mean, I could do without the "You're drama addicted" line which is clunky even without stressing the wrong syllable in "addicted"... but there are some amazing truth-bombs scattered throughout this song. Here's one: "You’ve crafted a story to reassure yourself / Everything’s out of your hands / It’s all someone else’s plan." Dang! Here's another: "The only way out is the one you’ll never try / And that’s the reason why / You’re never happy." Holy smokes, dude! If you can take these lyrical ideas and develop them into a more naturalistic performance with fewer mistakes—and probably a more thoughtful arrangement as well—then this could be one of your best. Not even kidding. As it is, this might be your swan song for this year's competition, but hey, we'll always have "NEIN! WE ROW!"

shame you had so little time to work on a song this week. It really shows, but I'm sure you know that, so I won't kick you while you're down.