(education) highest academic grading in the S-A-B-C-F scale / (chiefly video games) S, the highest rank or grade (above A) commonly used in ranking systems in video games

small size

(sexuality, euphemistic) sadism, sadist / (colloquial) dominant personality

SMS

(collectible card games, video games) super special rare, or any synonymous variations

PA system; public address system

Initialism of ダイニングキッチン (dainingu kitchin, “eat-in kitchen”). / abbreviation of 男子高校生 (danshi kōkōsei, “high-school boy”).

Initialism of ユニバーサルデザイン (yunibāsaru dezain).

vitamin A

(music) A-side