As he reached to his college dorm, he was welcomed by his childhood friends when they met in elementary school
Description about Sansui's friends are mentioned below:
Chifuyu Kyotsuke- He relied on Sansui most of the time in elementary school because he was his only friend when he met him and was shy to talk to other people in class, this influenced him in a good way and he managed to get good grades and was able to study later on because of Sansui...
Suzuya Tsuyu- He's always selfless to people, he always helps people who are less unfortunate than him and his main hobby is kickboxing. But his naivety leads him to be taken advantage of his generosity by some people and also he's often clueless so he gets blamed at some situations even though it's not really his fault...
Dylan Clark- He was a popular guy in school back then and was also the rich kid, basically he thought life was all better until Chifuyu came which made him annoyed that he couldn't take advantage of Sansui to do stuff for him just so he can slack off. He failed 12th grade but he had his own plan by bribing the college principal to get a letter of acceptance...
After Sansui met them, they had a nice chat and things were going well, they attended class while they were misbehaving by making each other laugh and they went out to places in the evening to celebrate that Sansui arrived at the right time, Until 1 week later...In the alleyway...Dylan was talking to an unknown person outside the college campus in August 19 2014...