Anime that have appeared from chapter 21-40 include these, in not particular order:

  Fairy tail

  Death note

  D. Gray man

  Akame ga kill

  Full metal alchemist

  Digimon

  Akatsuki no yona

  Date a live

  Naruto

  Strike the blood

  Black butler

  Is it wrong to pick up girls in a dungeon (Orario is the place where the anime takes place)

  Overlord

  Royal Road is the home of this novel. Visit there to read the original and support the author.

  Blue exorcist

  Hellsing

  Tokyo ghoul

  Higurashi no cano

  Bleach

  The sacred blacksmith

  Kill la kill

  Lord marksman and vandis

  Unlimited fafnir

  Chivalry of a failed knight

  Dragonar academy

  Dragon ball Z

  One punch man

  Bladedance of elementalers

  Assassination classroom