Yes. Before you went to reconnect with your parents.

...ah. Well... it's a long, confusing story, but... suffice to say, you went mad from the pressure from your parents conflicting with your ability to make any friends. I didn't see the event itself firsthand, but... I did see the results.

...well, I'm sure it'd be confusing for you regardless of how I explained it, but we basically ended up with three Norikos. One that doesn't call herself Noriko, the mind that got ripped out and put in a very different body... and you, Moeko.