Persona 5

Characters are aged up to 18+. Students are now in the final year of the School year

A story taking place in modern-day Tokyo and follows a high school student known by the pseudonym Joker who transfers to a new school after he is falsely accused of assault, and put on probation. Over the course of a school year, he and other students awaken to a special power, becoming a group of secret vigilantes known as the Phantom Thieves of Hearts. They explore the Metaverse, a supernatural realm born from humanity's subconscious desires, to steal malevolent intent from the hearts of adults. - Wikipedia

How does Ren Amamiya AkA Joker lose his social links?