As it suggests, this tag is to be used when the protagonist, who is originally described to be ugly by the author, becomes beautiful later on. These adjectives are used for the external physical appearances only. Tag describes the transition of the protagonist ONLY.
After dying, I woke up as a weak goblin. To survive, I have to destroy, consume, and evolve off of other monsters. From the ugly guy to the king who rules everything! Second novel by Author before EER