一いち人にん称しょう単たん数すう

Meanings

1

first-person singular

Grammatical term referring to the first-person singular pronoun or verb form.

number, strength, fate

一いち人にん称しょう
Refers to first person in general, without specifying singular or plural.
単たん数すう
Means 'singular' as opposed to plural; used in many grammatical contexts.

Compound of 一人称 (first person) and 単数 (singular).