The day of finishing saves...
Cleared everything on 124 and went into the metro in the treasure room. There, he fiddled around, took 2 demon knights, and came out with a few ducks. Along the way, Tant was not critically hit.
On the third turn, an opponent came through the Gate of Oblivion, took the main castle, and ran away. I retook the main castle, continue clearing the treasure room, but not the main one, but the adjacent one. Lacus is still scouting the main one.
On 143, a noob with birds and 30+ gold in fire elementals came. I still can't understand this move; why push such an army to retake my main castle, which I don't really need anymore, but that's beside the point...
I gave up the main castle, caught the hero, and killed him. For some reason, the hero was attacking the demons instead of the angels, which is also strange.