Mikado sounds Japanese, but I don't know about this cultivar. The fruit these seeds were harvested from came from Spain. Tasted pretty good for store-bought fruit. What struck me was the size of the fruit... 100 grams each! The shape is also unique, has an elongated beak similar to mango.
€2.70 or $3 per seed. Minimum order 7 seeds. Postage calculated per user.