The anime you’re probably thinking of is Berserk of Gluttony. It’s the one where the main character has the skill “Gluttony,” which matches your “wiht glut” clue.

Why this fits

  • The title directly contains “Gluttony,” which is likely what you meant.
  • The story summary mentions Fate Graphite and his Gluttony skill.
  • It’s also listed under the Japanese title Bōshoku no Berserk.

Quick detail

  • English title: Berserk of Gluttony.
  • Japanese title: Bōshoku no Berserk.
  • Premise: a character with the “Gluttony” skill gains power by devouring others’ skills.

If you want, I can also help identify it from a scene, character, or a few more clues.