Sero

Sero (セロ) is the leader of the Ekalrath Carillon and a former player.

Biography
Due to his past experiences, he is a good-natured person who is always willing to help others. He carries the scarlet bell, which has become the guild's symbol, on his him, as a reminder of his regrets. He humbly claims that he is not as good as the Nine Wise Men, but according to Mira, he is one of the best among the former players. According to Gilmen, he is afraid of heights.