Credits
Stroke order
Stroke outlines and stroke order come from AnimCJK, Copyright FM-SH, used under the GNU Lesser General Public License, version 3 or later. The lessons use these files unchanged apart from their colours; the originals are in the AnimCJK repository.
Voice
Kana and words are read aloud by VOICEVOX:冥鳴ひまり, generated with VOICEVOX.
Kana font
Kana are shown in Klee One by Fontworks, under the SIL Open Font License 1.1.