[Coldsaturn]

or the closest we can get to it.
I have to apologize because I love all the boys but Raf has taken my liver hostage so 80% of my cpu is busy with fishie thoughts and that comes at the cost of being proficient at the other LIs' lore to a satisfactory degree. So take this with a grain of salt, but it should still give you some kind of idea of the character. This is not a comprehensive list of ALL cards for the LI, just the ones that can help track the development of their relationship with MC.


PLAYLIST


If I haven't fucked up the order of the videos, this is what we should have


MYTH
Tower of Secrets
Snow's Embrace

Never Ending Winter [Anecdote]
A Pure White Heart [Anecdote]

A frozen Promise [Bond]
MAIN STORY (chap 1-2-3)
Glittering Lights
Tranquil Heart
Tranquil Moments
Sweet Conspiracy
Gentle Twilight
Starry Nocturne
MAIN STORY (chap 4)
Heart Within Reach
Nostalgic Sweetness
Drunken Intimacy
Cozy Afternoon
Business Trip
Fragmented Dream
Medical Rescue
Hidden Motive
Exclusive Tutorial
Lingering Warmth
Snowy Serenity
Eternal Attachment
Cherished Longing
Moonlit Dream
Heartstring Notes
MAIN STORY - THORNS UNDER THE MOON
Warm Heartbeat
Silent Poem
Fragrant Possession

Still In Dark [Anecdote] (right before Death&Rebirth)

ALTERNATE LINKON
Immediate Disorder

ANALYSIS (might keep expanding)
A Deep Dive into Zayne's Intimacy
Hidden Motive: The Language of Loneliness and Scars


P.S. Zayne is possibly the most complicated to fit into the main story line because among all the LIs he's the one that immediately feels romantically domestic, and it clashes hard with the more neutral main chapters. I did my best.
P.P.S. Following what you said a while ago, I'm not going to straight out tell you which video in the playlist will be nsfw. I can, if you want, otherwise have fun lol

---

Considering how putting these cards in order is a matter of pure interpretation, I'll link different timelines when I find them.

This user wrote several timelines in different reddit posts. My timeline is based off of theirs, with some tweaks here and there.
Here's another attempted timeline focusing specifically on romantic development.