This is a pleasantly cool ice cream made with minced fruit and sweet condensed milk. It's full of homemade goodness, even though it tastes just like the "Shiro-kuma" (Polar Bear) variety of ice cream they sell in Japanese convenience stores.
You can make lots of ice cream with just this small amount of ingredients, so it is nice. It does not have additives, which is only possible when it's homemade...
Definitely add condensed milk. You can also add finely crushed ice in Step 3 if you like.
Enjoy Japanese food around the world.