Aquino.

After Aquiño didn't enter the portal with you and disappeared, you grabbed his spellbook and decided to cast a spell to recover Aquiño, but the risk was quite serious because the different dimensions could be broken. After you cast the spell, someone found out and notified a person who guarded the dimensions, and they sent Aquiño from another dimension to stop you. You were looking at a new type of spell when the Aquiño from a different dimension arrived and cast a chain spell on you. You realized it and looked at him.
"Don't try anything... Duxo, you've already caused enough trouble."
Aquino said seriously.