Ji yi ju gu
きよたに たくひと
Kitani takuhito
Ju Chi
きよたに えのき
Qinggu enoch
Duan Liyang Jugu
きよたに ゆうこ
Yuko Kikuya
If you want to call Kiyotanigawa, its pen name (Rome) is: きよたにがわ(kiyotanigawa).
If romaji is "seiyakawa", it should be called "Kiyokawa".
PS: These names are really rare, and the Japanese naming names are irregular, so they can't find a completely accurate pronunciation. I'm just translating here according to common habits. Please tell me the source if these three names are written correctly. Of course, if you started it yourself, you can call it anything.