ケイ 
かか.る かかり -がかり かか.わる 
() person in charge () connection () connect oneself
        
かかり (n) official, duty, person in charge
かかわる (v5r,vi) (1) to be affected, to be influenced, (2) to be concerned with, to have to do with, (3) to stick to (opinions)
かかりいん (n) official (e.g. customs), clerk in charge
かかりかん (n) official in charge
けいそう (n,adj-no) contention, dispute, conflict, controversy
かかりちょう (n) chief clerk

Links: KanjiDic: EDict : Wikimedia
Etymologies: 中文字譜 : 説文解字