『COMPLETED』 Fluff 「GL」

Manga
High-school setting
Main couple: Blunt student council member MC x Popular student council president FL
FL falls in love first; acquaintances to friends to lovers; slow-burn romance
, (chapter 44)
Minor age gap - FL is a year older than the MC, depiction of self-esteem issues, depiction of self-loathing, senpai-kouhai relationship
Side couple: Literature teacher and student council advisor x Café manager and owner

Manga
High-school setting
Main couple: Cool and athletic MC x FL who only likes cute girls
Unrequited love; MC falls in love first; best friends to lovers; slow-burn romance

Male author, written for a male demographic, mild violence, threats of blackmail, homophobia, sexual harassment (not between the main and side couple), internalised homophobia, mild bullying and harassment

Manhwa
Main couple: Clueless and inexperienced college student MC x Former ballerina and relationship consultant FL
MC falls in love first; acquaintances to lovers
(mild)
Age gap - MC is 21 and FL is 27
1st side couple: FL's ex-girlfriend and professional ballerina x Manager
Unrequited love

2nd side couple: MC's college friend x Former friend and bully
Unrequited love
, (mild)
Bullying, harassment, depiction of child abuse

4-koma manga
High-school setting
High-school senior MC x Classmate's divorced mum and café owner FL
MC falls in love first
Age gap - MC is 18 and FL is 36

Manga
High-school setting
Main couple: Socially anxious trombonist MC x Outgoing drummer FL
MC falls in love first; friends to lovers
Minor age gap - MC is a year younger than FL, mild stalking, senpai-kouhai relationship
Side couple: Gyaru bassist x Free-spirited flautist
Friends with benefits to lovers

Manga
College setting
Rich and sheltered MC x Masculine and cool girl who gets mistaken for a man FL

Manga
High school setting
Short MC x Tall FL

Manga
Entertainment industry setting
Unpopular idol and radio show host MC x Super popular idol and newly debuted actress FL
SERIALISED VERSION: https://www.mangago.me/read-manga/oni_ure_idol_ga_kyou_mo_watashi_wo_oshitekuru/
Male author, minor age gap - MC is a year younger than the FL

Manhua
Historical setting - 1950s (?) China
Lonely and neglected wife of a businessman MC x Presumed dead ghost FL who haunts MC's mirror and wants to take over her body

Mild violence, cheating (not between MC and FL)

Manga
Established couple - girlfriends
Feminine and fashionable office worker MC x Masculine and unfashionable store worker and photographer FL
Discontinued by author