The Irregular at Magic High School Novel Volume 16 is written by Tsutomu Satou with illustrations by Kana Ishida.

Every year the Yotsuba Clan gathers it's most influential and powerful members. And like always, Miyuki has gotten an invitation. There's only one big difference this time: direct orders from the Yotsuba matriarch requesting her presence on New Year's Day and a bargain that may repeal Tatsuya's status as a pariah if Miyuki is willing to do whatever it takes...