as eli tries to find more skills he found that he
had a skill to create a (small) undead army so
he quickly went to a spot where it had been filled with bones and ruserected them to be in his fallen army he plans to rebuild the old demon kings Castle and make it into his own he ordered the (small) army of his to gather building supplies and souls of weak trespassers the (small) army nodded and went to complete they're orders eli then and went xp grinding in the forest behind the castle which was dangerous he then went to level 7 and upgraded his undead army skill to level 2 and the rest into soul flame due to it being essential for his later plans later when the undead army returned he summoned other undead to help now it was a slightly small army (40-50) he ordered some to guard the castle while he ordered some to rebuild it then ordered some to gather more supplies
15 days later
eli has done some experiments and managed to create a abomination a beast with several heads and kept together with stichtes and seems to be made with several animal corpses buy its incredibly strong.
he managed to fix the majority of the castle using some skills while the undead army did the rest they did the more intricate designs and redesigned the castle to a more skeleton/undead design for eli was the owner of the castle now not the demon king so he rebuilt the defences first and then the outside but now time for the inside he ordered the undead army to fix the inside and build him an iron throne they complied it took several days (18 days) but they managed to do it (there is a iron mine near the castle) eli then spent several weeks to upgrading him undead army skill now he has a 1200 under his command but compared to the armies of different kingdoms he was just a bug so he continued to grind xp and expand his army for several weeks until he manage to do it
he managed to fully regain the power of the demon since he gained/lost it on the day of his death now he had 953,000 under his command and he ordered all of them to build several walls to protect they're main base and add buildings between those walls and he also commanded them to not show themselves to outsiders since they still aren't ready. sure they can take a big kingdom now but if all the kingdoms discover his threat to they're kingdoms well then they're screwed since if all the kingdoms banded together against him and summon a hero he would certainly lose so he decided to arm his undead army he told them to mine and create armours for themselves and they did with absolute obedience