In Corps, you can produce and edit your units.
By leveling up Barracks in Dominion, the upper limit of unit organization cost increases and possible unit placement numbers may also increase.
When the number of units increases by leveling up Barracks, it will make it possible to use Swap Corps with the arrow buttons.
When you deploy heroines who have more than one unit in the defence corps, they deploy and join defense battle interceptions. There are great opportunities to obtain heroines' sealed stones in defence battles, so let's deploy a defence corps if you have enough resources.