"Devil Number 4" is a webtoon created by jangjin and woombee. Poverty-ridden college student Hanna finds herself being approached one day by a mysterious man by the name of Number Four. Claiming to be a devil, he promises to give her anything she wants in exchange for her soul. To his surprise, Hanna brushes off his offer, insisting that she doesn't want anything. Not willing to lose his credibility as a top-tier devil, Number Four stays on Earth to try and convince Hanna otherwise...
Devil Number 4 provides examples of the following tropes:
- Abusive Parents: Hanna's mother.
- Acquainted with Emergency Services: As a child, Hanna was very familiar with emergency services thanks to her mother.
- Angelic Beauty: All of the angels are quite easy on the eyes. Their beauty is commented on by a few characters In-Universe.
- Deal with the Devil: The decline of which kicked off the whole series.
- Driven to Suicide: Implied to be what Hanna's mother was trying to do.
- Fate Drives Us Together: Enforced between Joon and Hanna by God.
- Forbidden Love: Number Four and Hanna. Peace and Number 3.
- Gold and White Are Divine: Mika and God.
- Guardian Angel: Mika to Hanna.
- Hellish Pupils: A prominent trait of all devils.
- Horrible Housing: Where Hanna lived at the start of the series.
- Hopeless Suitor: Joon ends up as this.
- I Don't Want to Ruin Our Friendship: Joon's reasoning for not trying to pursue Hanna over the years after being rejected once.
- Interclass Friendship: Joon and Hanna. Compared to Hanna, he never seems to be particularly concerned with money.
- Klingon Promotion: Devil Number 3 claims he did this to the previous Number 3.
- Laser-Guided Amnesia: After the incident with Number Two and Saho.
- Loner-Turned-Friend: Hanna, who tends to keep to herself, is integrated into Joon's friend group.
- A Mistake Is Born: Hanna's mother wishes she'd never existed.
- Reincarnation Friendship: What Hanna and Joon's relationship ended up as. Though, it was implied to originally be meant to become...
- Reincarnation Romance: Attempted to be forced between Hanna and Joon by God, but ultimately averted. Played straight with Hanna and Number 4.
- Riches to Rags: Happens to Number 4 after breaking the rules for Hanna.
- Romantic Runnerup: Joon ultimately ends up as this.
- Starving Student: Hanna.
- Tearful Smile: Hanna, occasionally.
- There Are No Coincidences: Explained by Number 4 as the reason why Hanna and Joon kept running into each other despite her turning him down. God was very determined to enforce Reincarnation Romance.
- Voluntary Shapeshifting: All angels have this ability.
- You Are Not Alone: Said to Hanna by Joon in a Heartwarming Moment.
