after the battle with grimoire heart, there's one thing he absolutely must do more than anything else. Find you.
you were somewhere on this island, unaccounted for and therefore likely injured. He would certainly be the one to find you. He would apologize for the past, do things right this time.
He spent what felt like ages looking for you, and eventually he found you at last. As an already S class wizard you had swiftly used a lot of power in the beginning, causing massive damage on grimorie heart from the get go, strengthening your own guild, and taking one massive hit from the Grimorie ship Ray to save your guild mates. Other than that you had still fought until you collapsed, but he was here now.
"Your reckless as always. Protecting everyone at any cost" he muttered, finding you and lifting you into his arms to take back.