necessity (quality or state of being necessary, unavoidable, or absolutely requisite)

special mention

to feature, to single out for special mention

a calligraphy brush; paintbrush

unnecessary

needlessness

Synonym of ペンネーム (pen nēmu, “pen name”)

the act of writing something oneself by hand / one's own handwriting / a holograph, an autograph (something written by oneself, not just one's signature)

to write something oneself by hand

an honest and straightforward record of something, without embellishment or omission / holding a brush vertically when writing to use the tip of the brush / the act of writing something oneself by hand