有次
Aritsugu
伝統の丁寧な手仕事。【有次(ありつぐ)】の"一生使える"包丁や料理道具。 | キナリノ
That's the name of a knife shop/company. The site linked above says that Aritsugu was originally a swordsmith, and has a 450 years old history.
What is inscribed in the first picture is "karamu". Is this close to your name?
Yes, it seems like to be a santoku bōchō to me.
Santoku - Wikipedia, the free encyclopedia