As the name states, the mini sub features the chain's signature bread filled with a smooth chocolate sauce (that seems similar to Nutella or chocolate frosting in consistency) and fresh raspberries. It's something that wouldn't be unusual on a piece of toast here in the US but might be a bit carb-heavy in a sub roll.
The price on the Chocolate & Raspberry sandwich comes out to 170 yen (~$1.59 US).
Other sandwiches on the chain's Snack Sandwich menu include the Sweet Red Bean & Mascarpone and the plain Sweet Red Bean sandwiches.
Photo via Subway Japan.