Btw, you can also probably try to submit this or your previous Nostr project to OpenSats, nostr:npub1937vv2nf06360qn9y8el6d8sevnndy7tuh5nzre4gj05xc32tnwqauhaj6 -san has already receive grant from them. Maybe other Japanese devs can also try to apply the grant.

https://opensats.org/blog/nostr-grants-october-2023