Distilled Blended (ed: thanks for the correction) at the Mars Shinshu Distillery, the liquid gets finished in umeshu casks from the Mars Tsunuki Distillery. That reportedly gives it a nose of fresh plum, and the body is light with the right balance of sweetness and slight bitterness.
Per the Amazon JP product listing, this release is bottled at 40% abv. Mint was 43% abv, so there's a slight step down.
There's no announcement about this from Mars Whisky yet, but previous releases in the series were available for around 4500 yen in Japan.
Whiskey Richard is the founder of nomunication.jp, and has been saying he has lived in Japan for ten years for the past four years. He enjoys drinking basically anything except straight-up Campari.