Rakuto Igarashi

Rakuto is Sachie's bodyguard. Handsome and heroic, he is the most popular guy in school and is the student council president. No one at school suspects that he belongs to a yakuza gang, in part because he acts like a prince, and was considered one until he refers to Sachie as a "princess" and that he is her bodyguard in order to remove any suspicion that they are associated with yakuza.