As an alternative to the interest permitted in division (A) of section 1321.13 and in division (B) of section 1321.16 of the Revised Code, a licensee may contract for and receive interest at any rate or rates agreed upon or consented to by the parties to the loan contract or open-end loan agreement, but not exceeding an annual percentage rate of twenty-five per cent.
R.C. §1321.131