Japanese sweets keep fascinating me. It is more about the wrapping, the colours and the shape than the flavour. Each unit feels special. I got this sweet from a colleague who travelled to Kaga.
Buying a present (Omiyage お土産) for the colleagues in your team at work when travelling is a very ingrained tradition in Japan. It doesn’t need to be something special, it is ok to just bring one cookie or sweet for each member. I have the feeling that the main purpose of this omiyage tradition is to help make small-talk in the office. The act of giving a cookie to each of the people working with you is an opportunity to talk about things unrelated to work.