This latest version of the Hitogami dropped in store at the start of March. Feeback has been good this is a light racing shoe so a lot of customers have been buying it for 5k 10k and half marathon distances. As with many Mizuno shoes because it's using the wave plate as the cushioning system it tends to be quiet light.
There is a part of it that appeals to the person looking for a more minimalist running shoe, it's light it's very flexible but it has got quiet a high drop for someone who normally likes a more minimalist shoe. 9mm is seen as very high for a racing flat considering most Saucony and New Balance shoes are 8mm drops and their minimalist/racing flats tend to be 4mm drops. So it may suit someone who likes a racing flat shoe but is looking for something with a higher drop than your standard shoe.
Customers who are coming from the Hitogami 3 to this version have commented on a slightly more flexible feel to the shoe and initially it appears to be fitting a little tighter with two customers going up a half a size from their Hitogami 3.