On that night after he awoke his soul weapon, Granny Kotori decided to take on the task of teaching Aryan about the outside world, and to teach him all the things that his parents hadn't taught him till then.
After that night every day was something new for Aryan, he got the thing for which he was craving all this time, knowledge. When Granny Kotori started teaching him, he was slow to take on all those information at once, but as time passed on he got adapted to it and started asking questions that were on a completely different level, that no five or six-year child can understand.
Seeing Aryan's ability to understand, comprehend, and utilize the knowledge he had learned, Granny Kotori became more excited than before and taught him everything she knew starting from elementary level to university level and above.