Stories involving a reluctant male character surrounded by female presences who adore him. Although it falls into the romance genre it is often and willingly catalyzed also in the comedy.

Absolute Duo

25 min, 12 episodes, 1 season \ harem - action - supernatural - ecchi - romance - school

Arifureta: From Commonplace To World's Strongest

25 min, 13 episodes, 1 season \ isekai - action - adventure - fantasy - harem

Armed Girl's Machiavellism

24 min, 12 episodes, 1 season \ harem - school - comedy - shounen - action

Campione!

24 min, 13 episodes, 1 season \ harem - comedy - ecchi - fantasy - romance - magic

Date A Live

24 min, 34 episodes, 3 seasons \ harem - sci-fi - comedy - romance - mecha - school

Death March to the Parallel World Rhapsody

25 min, 12 episodes, 1 season \ game - adventure - harem - isekai - fantasy 

Everyday life with monsters girls

24 min, 12 episodes, 1 season \ ecchi - comedy - harem - romance - fantasy - seinen

Haganai: I don't have many friends NEXT

24 min, 12 episodes, 1 season \ harem - slice of life - school - comedy - romance

Haganai - I Have Few Friends

25 min, 24 episodes, 2 seasons \ ecchi - slice of life - comedy - romance - school - harem

Harem Time The Animation

26 min, 2 episodes, 1 season \ hentai - harem

Hayate the Combat Butler!

25 min, 101 episodes, 4 seasons \ parody - action - harem - comedy - romance - shounen

High School DxD

25 min, 48 episodes, 4 seasons \ school - comedy - demons - ecchi - harem - romance

How Not To Summon A Demon Lord

25 min, 12 episodes, 1 season \ isekai - comedy - ecchi - fantasy - harem - magic - demons

Hybrid × Heart Magias Academy Ataraxia

24 min, 12 episodes, 1 season \ hentai - action - sci-fi - harem - comedy - romance - ecchi - fantasy - school

In Another World With My Smartphone

25 min, 12 episodes, 1 season \ isekai - adventure - harem - comedy - magic - romance - fantasy

Infinite Stratos

24 min, 24 episodes, 2 seasons \ harem - action - sci-fi - comedy - ecchi - mecha

Kiss X Sis

24 min, 12 episodes, 1 season \ ecchi - comedy - romance - school - seinen - harem

Ladies Versus Butlers!

25 min, 12 episodes, 1 season \ school - ecchi - comedy - harem - romance

Maken-ki

25 min, 22 episodes, 2 seasons \ harem - action - ecchi - school - martial arts - super power

Masamune-kun's Revenge

24 min, 24 episodes, 1 season \ harem - comedy - shounen - romance - school

Mayo Chiki!

25 min, 13 episodes, 1 season \ ecchi - harem - comedy - romance - school

Monster Musume

25 min, 12 episodes, 1 season \ furry - harem - comedy - romance - ecchi - fantasy - seinen

Nisekoi - False Love

25 min, 32 episodes, 2 seasons \ harem - comedy - romance - school - shounen

No Game No Life

25 min, 12 episodes + 7 specials, 1 season \ isekai - game - harem - fantasy - action - ecchi - adventure - comedy

Ouran High School Host Club

25 min, 26 episodes, 1 season \ parody - harem - school - comedy - shoujo

Outbreak Company

25 min, 12 episodes, 1 season \ isekai - parody - fantasy - harem - comedy

Rosario To Vampire

25 min, 26 episodes, 2 seasons \ ecchi - comedy - romance - vampire - fantasy - school - shounen - harem 

Saekano: How to Raise A Boring Girlfriend

25 min, 23 episodes, 2 seasons \ ecchi - harem - comedy - romance - school

Sekirei

24 min, 25 episodes 2 seasons \ harem - action - comedy - ecchi - super power

Sword Oratoria: Is it Wrong to Try to Pick Up Girls in a Dungeon? On the Side

24 min, 47 episodes, 3 seasons \ harem - action - adventure - fantasy

Tenchi Muyo! War On Geminar

45 min, 13 episodes, 1 season \ harem - action - comedy - ecchi - fantasy - mecha - school

The Eden of Grisaia

25 min, 10 episodes, 1 season \ harem - drama - psychological - romance

The Quintessential Quintuplets

25 min, 24 episodes, 2 seasons \ shounen - comedy - school - romance - harem

The testament of Sister New Devil

25 min, 22 episodes, 2 seasons \ ecchi - action - harem - fantasy - romance - demons

The World God Only Knows

25 min, 36 episodes, 3 seasons \ harem - comedy - romance - shounen - supernatural

To Love-Ru

24 min, 64 episodes, 4 seasons \ ecchi - sci-fi - harem - comedy - romance - school - shounen 

Trinity Seven

25 min, 12 episodes, 1 season \ harem - action - comedy - supernatural - magic - romance - ecchi - fantasy - school - shounen

Undefeated Bahamut Chronicle

24 min, 12 episodes, 1 season \ mecha - action - ecchi - fantasy - school - supernatural - romance - harem

Yamada-kun and the Seven Witches

25 min, 12 episodes, 1 season \ harem - comedy - school - shounen - supernatural

Yosuga no sora

25 min, 12 episodes, 1 season \ ecchi - drama - harem - romance 

Yuragi-sao No Yuuna-san

24 min, 12 episodes, 1 season \ ecchi - comedy - romance - shounen - supernatural - harem