幻を追う[maboroshiwoou] to pursue an illusion
幻影[genei] phantom
幻覚[genkaku] hallucination
幻覚剤[genkakuzai] hallucinogen
幻姿[genshi] apparition

幻視[genshi] visual hallucination
幻想[gensou] illusions
幻想劇[gensougeki] non-realistic drama
幻像[genzou] phantom

取り憑かれる[toritsukareru] to become obsessed with
信憑[shinpyou] trust
信憑性[shinpyousei] authenticity
憑む[tanomu] to request
憑く[tsuku] to possess

憑依[hyoui] dependence
憑拠[hyoukyo] devil possession
憑物[tsukimono] evil spirit
狐憑き[kitsunetsuki] possession by a fox spirit
憑み[tanomi] request