The Duke couldn't push his horse any further. However, he needed to keep up with the Crown Prince. There was no other way for him to take the situation on.
'I can use a spell to help the horse. But I don't have enough Manna to spare. I've been using Manna to help the soldiers who were lagging.'
It's the truth.
Duke Gertrude, even though no one requested it of him, he used his Manna to assist the soldiers who couldn't keep up with the group. They had to have every single one of the members accomplish the plans they had for the Arscheston Fief.
The Knights offered to be of help to the Duke. Withal, Duke Gertrude turned them down. Unlike him, the Knights' capabilities were taken into account in making the plan. He only joined the expedition when the planning had already ended.
The Commanders couldn't risk tiring the Knights, so they were in agreement with the Duke.
