Reserve Japanese translation if needed.

- Native language
Japanese

- Bitcointalk username
takicut
https://bitcointalk.org/index.php?action=profile;u=2314577

- Portfolio
https://docs.google.com/spreadsheets/d/1DPb6CDVhizWPzbyHKk5GnZt48XyDBDVFZ7_n9hjCf1g/edit#gid=0

- ETH
0xaA99D5F177c14475594a762492Fc6fDff1Bf3033