by やんユキ

hypothesis: toki pona can be entirely written in japanese kana, without (han)dakuten or additional characters

toki pona is CVn like japanese, so yes, kana will map pretty much 1:1 to the syllables toki pona use

してれんカナ

use them to write native words

* the wu, wo, ji and ti, phonemes are forbidden, while ju is unused. they may theorically be used for non-standard words hence their inclusion in the table. ji, je and wu also have poor font support due to being unused and archaic in japanese. also, there are no exceptions, tu and si aren't tsu and chi respectively. finally, h is mapped to p (with or without the handakuten), y is mapped to j (same sound) and r is mapped to l (mostly same sound).

use them to write foreign words

* same remarks as in hiragana.

source