Misspelling of きをつけて. Since o is written as を when used as a particle.

骨学: osteology

(informal, cutesy) Alternative form of かわいい (kawaii)

無力: powerlessness

現実的: pragmatic, down-to-earth

巨大: enormousness

巨大: huge, gigantic, very big

基礎: basis, foundation, groundwork / 起訴: litigation, prosecution / 稀疎: rarity

木曽: the area around the upper part of Kiso River, west of the Kiso Mountains; a Japanese surname

a place of worship / 城: castle