(education) third year in senior high school; twelfth grade / (education) third-year student in senior high school

Alternative spelling of サン・パブロ (“San Pablo”)

San Pablo

(historical) sangaku (ema on which is written an original maths (和算) problem and solution)

friendship bracelet

One of the shamisen tuning methods. A tuning in which the third string is lowered by one whole tone (two semitones) compared to the original.

(organic chemistry) oxalic acid

(organic chemistry) oxalic acid

mountain stronghold / mountain camp / shanzhai: imitation or counterfeit consumer goods, especially from China

three directions