[He doesn't answer immediately. That's a heavy question and he takes some time to think about it. If he stayed here forever, he would never get to see Edgar, Section Chief Twi, or any of the others again. He'd never become a full-fledged Exorcist. But then the alternative of going home meant...
After a minute he nods.]
...I guess so. I like it here. [Allen told him he dies really young so at least here he gets to spend time with Yu and grow up. Staying with Yu is all that matters.]