Corne de Corne Tokyo from Morozoff Tokyo:03 series
It looks maybe simple cokkie or buiscuit based, but not only that.
Inside of the light cookie based roll, whipped chocolates are filled.
The green ones are Matcha(green tea) choco, and pink ones are strawberry choco.
Looks cute as well :)
Morozoff has a lot of yummy sweets (yes thats why I can't help buying when I go near by),
and heard this series, Morozoff Tokyo:03 is available only in Tokyo Station!
I'm sure I will get a few packs when I go back to Tokyo next time.