Civil Code of Japan is described in Acts 89 of 1896, I am not sure why there is dual reference, probably it was mended in 2017 under Act 44. I.e. the Civil Code of Japan, most part of which is description of contracts, and seller-buyer relations.
The question is, where is the scope of allowed state imposed penalties defined, for the party knowingly breaking the articles of the Code, and refusing to pay out the full compensation?
Such a wonderfully thick book should be worth the paper it is printed on; so where are the iron balls and sharp blades?