The tuna in the tomato sauce is delicious. This tomato pasta with tuna is a family favorite. The key is the sugar added to soften the sourness of the tomatoes.
I've been making this tuna-tomato sauce for a long time. I uploaded the recipe for my records.
You can add grated Parmesan cheese before eating. The key is to add sugar. It will neutralize the sourness of the tomatoes.
Enjoy Japanese food around the world.