[Comprehensive British and American] First Person Non-Plural

When Isaac woke up, he found that the whole world had changed. He became an FBI, he was a profiler, dedicated to fighting against the perverted killers in the United States. He has a harmonious family, a group of lovely relatives and a fiancé who just completed their engagement... But the top priority now is how he can convince these people that something must have gone wrong and he was mistaken for Isaac Costa. Then, Isaac held the diagnosis certificate that was said to be issued by an authoritative psychologist in the world. He was noncommittal about the conclusion of split personality. He focused his eyes on the signature of the expert and couldn't help but shudder. Thank you to Tea Leaf Picture Shop for the beauty attack. The cover is great~ Announcement: I will enter V on Friday, and there will be three updates. Please support me~ Intention: