Nom nom."Yum Yum" (i.e., pleasurable eating noises).
The term NOMNOM refers to the sound you make when you're eating something incredibly tasty. It derives from the noise made by the Cookie Monster on the TV show Sesame Street. ローカライズ shima
TBC,TBD= To Be Confirmed(確認中)、To Be Determined(未定) 仕事メール文 shima