This is really beautiful and sorrowful, Troisnyx. Sometimes your vocals come across as being somewhat over-processed, and while I would generally comment on the enormous amount of reverb, in this case these elements really come together nicely without sounding overdone. At over seven minutes in duration, is it admittedly rather lengthy, and that may end up being a bit off-putting to first-time listeners, but I would hope they choose to remain and give it a chance.
Personally, I feel as though you could have really increased, and similarly eased, the tension by making good use of percussion. As it is, with the track being so long, it inevitably ends up being fairly repetitive. Your elements come together so nicely, though! The bass work really sets the mood, and the simple yet effective staccato chords keep things moving forward.
It's ultimately something of a minimalist track, instrumentally-speaking, and that brings its own tension, but the progression is so slow that the tension never really eases. That, of course, brings me back to my earlier comment about percussion. Oh, what you could do with a dramatic, slow Ballad beat in this piece! I just can't help but feel as though it was a missed opportunity.
Harmonically, there are two high, plucked notes that really don't feel like they fit within the mix when everything else meshes so well. The first instance is at 2:34, then once again at 5:46. Those moments sound oddly flat and disharmonious.
In conclusion, there's a lot to love in this track, from its wonderfully pensive overtones and apropos French vocals, to the minimal yet powerful use of 8-bit VST and softly-plucked Sytrus. As far as subtle yet powerful nuances go, I personally find the distortions leading into the chorus to be of particular note. Well done.