What Does It Mean That the Evil Dragon You Just Defeated Is a Arrogant Woman with a Poisonous Tongue?

It was obvious that he had sacrificed his life to control the field, but his teammates had picked him up. Honors and beauties all belonged to his teammates. He was just like a used rag, and even his medals had been melted into the armor of a "hero". When he was drinking in the dungeon, he discovered that the evil dragon he had just defeated - turned out to be a tsundere with a poisonous tongue?