(mythology, Japanese mythology) an 鬼 (oni, “ogre; demon”) who dwelled in 大江山 (Ōeyama, “Mount Ōe”) and kidnapped women and children and stole money in the city

(chiefly fiction, especially video games) to get upgraded; to get enhanced

東日本大震災: The Great Eastern Japan Earthquake

尽きる: to be used up; to be exhausted