まえカノ
former girlfriend; ex-girlfriend
Noun
その制服せいふく、前まえカノになんちゃって女子高生じょしこうせいプレイさせるために買かってたもんなんてバレたら・・・。
If she finds out that that uniform was one I bought to get my former girlfriend to be a pretend 'high school girl' ...