Advice about senmon gakko in Tokyo

About me:

I'm (23y male) currently a student at a language school in Tokyo City and will graduate in March next year. I have a bachelor's in English translation, and an IELTS Test Report Form (TRF) of 7.0.

I would love to work as a Passenger Service Agent for a Japanese airline in the future. And right now, I'm stuck choosing my future Senmon gakko, so I desperately need some recommendations for Senmon gakko for the job that I'm aiming for.

Ps: Any advice about the Passenger Service Agent for a Japanese airline career would be very appreciated.

by EmbarazzIng-09