rimuru tempest becomes a true demon lord

This 'sleep' is different from the usual Evolutionary Slumber and the Low-Activity Mode used by Spiritual Lifeforms. The individual's consciousness will grind to screeching halt as they're put into a special 'sleep' that is impossible to resist and lasts for three days. The initiation is a process in which the Demon Lord Candidate is tested by the world itself to determine if they're worthy of being a Demon Lord. 'Human Souls'｣, the World Language will confirm their intent to become a Demon Lord, after which, the start of the Harvest Festival will be announced to those in their surroundings and the Initiation ｢通過儀礼｢イニシエーション｣, inishiēshon, lit. Once an individual with the qualifications to become a Demon Lord germinates the seed with an appropriate amount of Nutrients ｢人間の魂｢ヨウブン｣, yōbun, lit. Similarly, the 10,000 number is only an average, with the actual quantity of soul energy being what matters, not the number of individual souls. It is usually said that 10,000 human souls are necessary for this process, but in fact, the soul of any creature capable of passing a mirror self-recognition test is sufficient. Once the individual obtains the qualifications to become a Demon Lord, they're required to Germinate the Seed ｢必要な条件｢タネのハツガ｣, tane no hatsuga｣ using a large amount of souls. In order to meet the base requirements to undergo a Harvest Festival and become a Demon Lord, an individual has to fulfill certain conditions, at which point they're referred to as a Demon Lord Seed ｢魔王種, maō shu｣.

Rimuru tempest becomes a true demon lord