A friend who runs a company in Japan can give me a work visa?

Of course. A friend who runs a company in Japan can hire you and apply for a work visa from the Japanese Immigration Bureau. However, some conditions need to be met, such as having the corresponding skills and experience, and the employer needs to apply for a work permit from the Japanese Labor Bureau. In addition, Japan's requirements for foreign technical talents are very strict, and many occupations have specific skill level requirements. If you want to work in Japan, I suggest you actively look for suitable job opportunities and apply on the basis of understanding relevant policies and conditions.