So, ONC2021 has started! Even though I'm not participating this year, I do hope to next year. For those of you participating, good luck, and here are some title ideas. 

Titles are arranged loosely based on genre. (eg, 'Even Death Can't Save Me' was set under 'horror titles', however, it can also be a romance title. )

DISCLAIMER: I will not remove any of the titles from here, and I might use any of these anytime. If two people like the same title, and they use the same title, there is nothing I can do. So if you do use these titles, just remember to check whether they are unique or not.

Series Titles

In Light

In Darkness

Heart of Stone

Spirit of Glass

Glass Heart

Stone Heart

Diamond Mind (/silver mind)

Blooming Flower

A Withering Flower

A Dying Flame

A Burning Blaze

Middle Grade/YA

A Failed High-schooler's journal

Contemporary/ all genre titles

Grey wolf

Lies!

Whiteheads

Avant-garde

Asynchronous

Desperation

A trail of Deceptions

Scars Never heal (you could replace 'scar' with hearts/souls/whatever)

The Truth about Lying

Lyric Notes

Cloud Cuckoo Land

Where Oceans Meet

Blood, Sweat and Tears

Pride, Envy and Greed

War, Bloodshed and Death

Belittle

Rosebush Thorns

Stockholm Syndrome

Side Effects

Trigger Warning

Paranormal/ Horror

Disturbing Dreams

A Serving of Red Soup

Invisibility Blows

'Your Forgot Your French Lesson' (hint: duolingo fanfiction?)

Ducks are Pretty Scary

Even Death Can't Save Me

Romance/Contemporary

Total strangers

Harmony, Synchrony

Magic, Music

Falling out of Love

Balloons with Letters attached

Violins and Violas

Falling From Cloud 9

Sapphire Pendant

How NOT to get a Boyfriend

Heart-breaker, Soul-eater

Esprit

My Lips are Sealed

Guns and Roses

Pretty Genes

Little Miss Perfect

Mr Right

Little Miss Perfect an Mr Right

Side Effects of a Crush

Side Effects of Love

Symptoms of Lovesickness

Fantasy

Spirit of the Woods

Vampire blood

A Farmer's Girl

Conjurer

Witch

They Say I'm a Witch

Beastly Beast

Crossed Spears

Crossfire

Humor

Forgive me universe, for I have Sinned

Erotica (forgive me universe, for I have sinned) 

Devil Erotica

Yeah, I think that's enough titles for today.