Japanese firms are interesting to work with. I enjoyed the culture, personally. I have two anecdotes.
The old white box PC shop I worked for, back in the 90s, quoted PCs to a Japanese-owned auto parts manufacturer. The Customer accepted the quote, paid an up-front deposit, and requested the PCs not be built and delivered until some construction at their site was completed in a few months.
In the meantime component pricing went down and speeds/feeds went up. When the PCs were built we ended up being forced to source higher clock speed CPUs and larger hard disk drives. It took some cajoling to get the Customer to take delivery. They felt they should pay more for the upgrades. (We were actually making more money on the deal even with the upgraded components anyway!)
My current company once pitched a support agreement to a Japanese-owned firm. We offered a discount for annual commitment versus month-to-month. I'd copy/pasted the month-to-month terms for the annual but forgot to alter the minimum notice period for ending the annual option. Both month-to-month and annual indicated a notice period of 30 days rather than the intended 180 days for the annual option.
The Customer's contact questioned the notice period being the same. He asked why they wouldn't opt for annual commitment, get the discounted rate, and also have the 30 day notice period. My partner, who had worked with Japanese firms in the past, responded: "We know you wouldn't choose the annual option if your intention was not to work with us for at least a year." The Customer agreed and we ended up getting the gig on an annual basis.