馴染 なじ
najimi

Noun
no-Adjective

1. familiarity; intimacy; acquaintance

あの ひとはこの みせ長年 ながねん馴染 なじ きゃくです。
ano hitowa kono miseno naganenno najimikyakudesu.
He's been a patron of this store for many years.
Other forms: