Need opinions about My Japanese way of life (crucial change)

Hi everyone,

I'm currently living and studying in Japan (language school), and I’m seriously considering a big career change next year. I’m 29 years old, i have a Master's in Management from Europe. However, after some years in the corporate/management field, I realized I don’t want to continue down that path.

I’ve always been drawn to design — especially graphic/motion design and UI/UX. So I’ve been thinking about enrolling in a Senmon Gakkou (専門学校) here in Japan to study. Right now, I’m considering schools in Tokyo or Kyoto, such as Kyoto Computer Gakuin or similar institutions. I’m especially curious about the field of digital design, motion graphics, and UI/UX.

Here are some of my questions and concerns:

Is Senmon Gakkou worth it for these fields in Japan?

Do these schools truly teach you the skills and software needed to work professionally in the Japanese design industry?

Do people actually find jobs in after graduating?

Is it a bad idea to "start over" at 30, even if I already have two degrees in a completely different field or should I stay in my original field despite not enjoying it?

I know there’s always a risk when changing careers, especially in a different country and culture. But at this point, I’m willing to accept lower pay or start from the bottom — I just want to do something I enjoy and can see myself doing long-term.

Have any of you gone through a Senmon Gakkou in Japan, especially in design-related fields? I would love to hear your experience — good or bad. Any advice or insight would be really appreciated.

Thanks in advance!