Hi, To fix this issue, I've updated hinawa-utils package to 0.1.0-2 [1] and it was put into Debian NEW package queue.
Since package has been uploaded into new queue, 8 months has passed. I'm still waiting for accepting the hinawa-utils. (As this package had uploaded before Buster release and point release event has happend, ftp-master team members may be too busy, I guess) [1] https://ftp-master.debian.org/new/hinawa-utils_0.1.0-2.html