High School Return of a Gangster

Genres: Business, Comedy, Drama, Fantasy
Tags: Body Swap, Sismance, Sassy Female Lead, Smart Female Lead, Strong Female Lead, Eccentric Female Lead, Naive Female Lead, Infidelity, Revenge, Bromance

Genres: Comedy, Youth, Drama, Supernatural
Tags: Friendship, Slight Romance, Family Relationship, Student Supporting Character, Student Male Lead, School Setting, Teenager Supporting Character, Teenager Male Lead, Spirit Possession

Genres: Romance, Life, Drama, Fantasy
Tags: First Love, Father-Son Relationship, Father-Daughter Relationship, Hardworking Female Lead, Mother-Daughter Relationship, Life Lesson, Becoming Young, Hidden Identity, Character Development, Teenage Pregnancy

Genres: Mystery, Comedy, Drama, Supernatural
Tags: Body Swap, Murder, Hardworking Female Lead, Smart Male Lead, Investigation, Manager Supporting Character, Serial Killer Male Lead, Detective Fiction, Detective Female Lead, Psychopath Male Lead

The similarities are body swapping but in 'The Day of Becoming You' gender-swapping is involved with body swapping and it's a romance drama.

Genres: Comedy, Youth, Supernatural
Tags: Student Male Lead, School Setting, Childhood Friends' Relationship, Classmates' Relationship, Samurai Male Lead, Teenager Male Lead, Magical Object, Flashback To Past, Miniseries, High School

Genres: Thriller, Mystery, Romance
Tags: Plastic Surgery, Hidden Identity, Suspense, Plastic Surgeon Male Lead, Doctor Male Lead, Illegal Business, Conspiracy, Disability, Illness, Stolen Identity

Both have same scenarios like school bullying, but someone like dokgo came to eliminate the bullies. The exceptional fighting skills also are notable, like a valiant or heroic characteristic of the lead.

Genres: Action, Military, Historical, Comedy
Tags: Power Struggle, Sengoku Period, Oda Nobunaga, Adapted From A Manga, Time Travel, Honor Suicide, Doppelganger, Slight Romance, Hidden Personality, Deception

Genres: Mystery, Law, Drama, Fantasy
Tags: Time Travel, Fight For Justice, Death, Prosecutor Male Lead, Strong Male Lead, Corruption, Violence, Investigation, Bullied Male Lead, Competitive Male Lead

Genres: Thriller, Mystery, Sci-Fi
Tags: Time Loop, Death, Investigation, Explosion, Suspense, Flashback To Past, Rescue Mission, Violence, Character Development, Strangers To Lovers

Genres: Action, Mystery, Romance, Sci-Fi
Tags: Time Travel, Death Of A Fiancé, Genius Male Lead, Attempted Murder, Fight, Death, Android, Artificial Intelligence, Robot, Murder

Genres: Historical, Romance, Drama, Political
Tags: Power Struggle, Biographical, Joseon Dynasty, Slow Burn Romance, King Male Lead, Royalty, Conspiracy, Fight For The Throne, Political Intrigue, Character Development

Same actor

Genres: Action, Thriller, Drama, Sci-Fi
Tags: Time Altering, Past And Present, Gaslighting, Family Secret, Rich Male Lead, Hardworking Male Lead, Different Timelines, Smart Male Lead, Mother-Daughter Relationship, Father-Daughter Relationship

Genres: Comedy, Youth, Drama
Tags: Yakuza, Student Supporting Character, Student Male Lead, School Setting, MDL Remake, Gang Leader Male Lead, Teenager Supporting Character, Organized Crime, Disguised As High Schooler, Teamwork