Yes, they can use Similar terms like they are doing in JICA project without using JICA. Export defense equipment is new venture by Japanese. However they way they're going to do it, I do suspect will not be much different with the way they're doing Investment-Credit Loan cooperation in other sectors.
Just like they are taking that 3 EW Radars deal from Philippines. If I see the Philippines forums, even they're quite surprised with the speed of the deal in comparison of how usual Philippines MinDef getting procurement deal.
For one thing, Japan already have more than 50 years cornering commercial deals in Asia, and they know how to co-op better.
All the deals they're doing is part of getting orders for their own industry, but in same time they're also getting partners in other Asian Host countries. In one point it give involvement to local industry and Jobs (which is good for their PR campaign, which also so far they're doing it better then the Chinese), on other points they also put the local partners as part of their supply chain this maintain long term Partnership.
This will give continues foot hold on the market, we can see that on what they're doing with Thailand and Indonesia automotive industries (which are two largest in ASEAN).
MHI not only looking just for PAL facilities, but they are also assessing other Shipyards in Banten and Batam. Thus it shows similarities with Japanese practice on looking for Partners to do the local jobs.
Question will be if TNI-AL will prefer on Japanese systems. This's the systems that they're not familiar with. However looking on MHI videos on 30FFM seems they prepare to potentially combine non Japanese systems in the design.
I suspect MHI looking on Partners to build the hulls and superstructure, while they supervise the building, and system integration. Japanese machineries and propulsion system will be use, but on sensors, electronics and weapons they will let whatever the customer choose.
Just like in the Philippines, Japanese can cut other potential suppliers that already in talk before. After all, even with Chinese and South Korean advancement on commercial deals, ASEAN as whole still relied to Japanese as biggest Investors and suppliers on Heavy Industry equipment and High Tech equipment.
One thing that can be said with Japanese, they might be bit slower to come with decision compared to Chinese and South Korean, however once they make their move, they're relentless on pushing it.