How much time did it take Yuu Otosaka to fulfill his promise to Tomori? I just finished watching Charlotte and I'm curious as to whether it is mentioned anywhere how much time it took him to fulfill his promise?
He lost his powers after using it multiple times per rotation so keeping in mind he made the travel back and forth multiple times and to keep increasing his profits it might have taken more than 2+years without the powers if we take into account the time he spent travelling but based on his promise it only took him around 2 years to increase profits and start the school