By wikia archive Musashi was map clear reward in Fall 2013 event and Hatsukaze was a drop. While I appreciate your help editing notes, I will have to revert back to mine, kittey.
Okay! We still have lots of time left so let's grind it 'till the resources run dry!Have a bigger ambition will you?
And so, I finally got self-conceited.
So then, after I got I-19 and Noshiro, I challenged Hatsukaze.As Musashi was out of reach, I went for the Tsuchinoko Hatsukaze instead because she rarely drops normally.Because Hatsukaze drops in E-3 so as long as we could get there it's a winning game. Let's do this!