[TOMT] Difficulty Hard xd - Help finding a specific manga/webtoon from the Mangarock Era (2015-2019?) Lost media?

Basically there was a dark fantasy type almost penance/fallen world type aesthetic manga I have tried for years to find. I have tried image search, ai, even tried to torrent but I can't because the bank and common sense says no to a 15tb data dump.

To my best recollection it was like this giant world that seemed almost like it was in a cave with pillars/or massive forest where the trees cant be seen only grey spire-like trunks. The ground can never be seen, I am pretty confident on that. The story is basically this like elf-like looking muscular knight guy fighting against maybe dark knight type creatures to try to save a character, maybe a princess or something, so he climps these trunks on the outside through thin paths that interconect the spires, and I think he gets stabbed by the knights and maybe something about penance, before we start the story again, this time from either a different point in time or a "respawn" i'm not sure if it was clear, the story was quite mysterious and anachronistic.

The style was like dull colours, pastel greens and darks, the backgrounds were deep chasms of fog grey tones and stuff.

It felt like it was a coloured webtoon/manga like a trial for vertical scrolling types.

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*Warning* I made the summary below with ai about anything I could possibly remember or might apply through hours of queries. My thoughts are messy, I'm hoping the summary can help.

This has been driving me crazy for years. Here's everything I remember:

Platform: Read it on Mangarock or Webtoon around 2017–2020. Possibly a XOY or XOY League original (Japanese platform that shut down 2019).

Format: Vertical scroll, full colour, minimal to no dialogue — almost entirely told through art. Possibly a short series, one-shot, or promotional piece.

Art style: Realistic-leaning, mature. Feels like a Japanese artist working in webtoon format. Pale pastel colour palette — greens, blues, greys, black, with red accents on characters. Backgrounds are enormous and atmospheric. Castlevania × Elden Ring × BLAME! vibes.

Opening scene: The protagonist wakes up suspended and connected to a massive tree/pillar by many wires coming from his back. He also has swords impaled through his body — like a crucifixion or sealed deity pose.

Protagonist:

• Tall, extremely muscular, heavily scarred
• Long smooth silver-gold/blonde hair
• Eyes possibly covered — blindfold or ribbon
• Metal fused into or protruding from his body
• Carries a sword
• Elf-like pointed ears
• Armour is mechanical/steelpunk — Warframe meets Castlevania

The world:

• Entirely underground — a vast cave system held up by enormous tree-root spires, Yggdrasil-like
• Country-wide voids between pillars
• Extremely grey and desolate, monumental scale

Story:

• An imprisoned princess
• Themes of usurpation and penance
• Dark armoured knights as antagonists
• Angel-adjacent themes without explicit angel iconography — more like a fallen/sealed divine being
• Almost no dialogue, cryptic and atmospheric

May have been titled something like "Yggdrasil"

Any help appreciated.

And yes I am still mourning the loss of my mangarock library.