[Google Fonts]
Jost
by Indestructible Type (SIL OFL 1.1)

Zen Kaku Gothic Antique
by Astrolab Inc. (SIL OFL 1.1)

JetBrains Mono
by JetBrains s.r.o. (SIL OFL 1.1)

Montserrat
by Julieta Ulanovsky (SIL OFL 1.1)

Lora
by Cyreal (SIL OFL 1.1)

Quicksand
by Andrew Paglinawan (SIL OFL 1.1)

Klee One
by Fontworks Inc. (SIL OFL 1.1)

BIZ UDPGothic
by Morisawa Inc. (SIL OFL 1.1)

Zen Maru Gothic
by Yoshimichi Ohira (SIL OFL 1.1)

Noto Sans JP
by Google (SIL OFL 1.1)

Sawarabi Gothic
by mplus-fonts-dev (SIL OFL 1.1 / CC BY 4.0)

Hina Mincho
by Shujiro Sano (SIL OFL 1.1)

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[Local Fonts]
うつくし明朝体 (Utsukushi Font)
by FLOP DESIGN (IPA Font License v1.0)

美咲ゴシック (Misaki Gothic)
by 門真 なむ / Little Limit (MIT License)

小伝馬町 (Kodenmachou)
by 自家製フォント工房 (SIL OFL 1.1)

無心 (Mushin)
by Maniackers Design (IPA Font License v1.0)