Loan with crypto as collateral taxable as foreign income? (non-US citizen)

Hi everybody,

I wondered if I take a loan of e.g. $10.000 using BTC as collateral and sending the fiat to my Japanese bank account (converted to JPY), does this count as taxable income?

The platform I would use is outside of Japan so I imagine this would be counted as "foreign income".
I am a tax resident in Japan as I have been living in Japan for more than 5 years, so my foreign income is taxed.