The Wizard King summons Asta after his work dealing with the Eye of the Midnight Sun. Yami tells Asta he can come with him to the royal capital, since he has to go to a conference of all the Magic Knights Captains.
the Magic Knights Captains 
regarding tomorrow's conference.
.إلى جميع قادة فرسان السحر بخصوص الاجتماع غدًا
a todos os Capitães dos Cavaleiros
sobre a reunião de amanhã.
о чём завтра будет совещание.