"Devour the brightest day. Enshroud the blackest night. Treasured sword of hell. Unite with my body as your host, and become the demonic beast of darkness that annhilates everything."
― Tobio Ikuse (Highschool DxD)

The power to merge with the weapon the user is wielding. Combination of Weapon Proficiency, Amalgamation and Infusion.


The user can merge with any weapon they are wielding to empower the user or prevent losing it.





  • May have difficulties keeping the merge for a long period of time.
  • Soul-Bound Weapons are immune unless it is the user's weapon.
  • Process may be irreversible.
  • Destruction of weapon may cause harm to the user.
  • Merging with Demonic or Divine Weaponry may have adverse effects, depending on user's affinity.

Known Users

Known Weapons


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