It’s strawberry thunder!!
As a Tateyama Thunderbird, I don't think it's anyone else...!!

The classic flavor “strawberry flavor” Black Thunder is now available in a value bag!
This is a family pack product of Black Thunder, a strawberry flavor that is the classic chocolate confectionery.
Contains strawberry chips so you can enjoy the sweet and sour strawberry taste.
By half-coating the chocolate, you can enjoy the combination of the sweet and sour strawberry taste and the gentle chocolate taste.