Certain

Common in published Japanese. A handful of these and real text starts to open.

More common than 初 (First), less common than 川 (River).

The burst Heart on the tatami flings a fresh Drop sideways with every beat, and every one of them lands in the same split in the mat.

In words

必ずかならず certainly,necessarilyN4

必要ひつよう necessaryN4

必死ひっし inevitable death,desperation,frantic,inevitable resultN3

必 is rank 196 of 2,608 in published Japanese.