How to Obtain
|Cannot be auctioned, traded, or bazaared, but can be delivered to a character on the same account.|
Can be obtained as a random reward from the Gobbie Mystery Box Special Dial and similar sources.
Mitsukane (光包) is one of the disciples of a Kamakura-era school of swordsmithing known as the Rai (来). The full title and name given to this specific swordsmith is Chudo-Rai Mitsukane (中堂來光包). (JP Wiki)