改悟 is read as かいご (kaigo) and means reform.
かいご
kaigo
かいぜん
kaizen (Japanese business philosophy of continuous improvement)
かいていばん
revised edition
かいしゅう
religious conversion
かいけん
constitutional change
repair
かいてい
revision (of text)
かいはい
reform and (or) abolition
かいしょう
renaming
かいし
change of one's surname
かいせいあん
reform bill
かいあん
revision
かいざんけんしゅつ
manipulation detection