Enxi Su

スー・エンシー ／ 蘇 恩曦

The person Mai Sakatoku was on the phone with when she infiltrated the Kassel Academy, and who was also giving orders to Laotan thru a smartphone. She excels in mathematics and finance, and are in charge of fundraising for the team. She really likes potato chips. (Source: Ryuzoku Anime website, translated)