Iruma and Lead end up being trained by Robin's relative, Barbatos Bachiko. Bachiko is very skilled and was personally asked by Sullivan to assist Robin with tutoring the kids. They were supposed to have a rather hard training schedule... but all Bachiko asks them to do is random errands. Lead has had enough of that and goes back to Robin. Iruma is left frustrated and alone. He learns that Asmodeus and Clara have been training and decides to take matters into his own hands!
If you do not advance to Dalet, 
you will be thrown out of the Royal One.
.إلم تتقدموا إلى رتبة دالِت، ستطردون من الملكيّ
Wenn ihr nicht zum Dalet-Rang aufsteigt,
fliegt ihr aus dem Royal One raus.
Si vous ne passez pas tous Dalet,
adieu Royal One.
Se non salite fino al rango di Dalet, 
verrete espulsi dalla Royal One.
Если не достигните «Далета»,
то пойдёте прочь из «Роял Уан».