Pros
Keyence has a lot going for it. They are always 3-4 years ahead of everyone else when it comes to product development. The company really understands how to get the most out of it's individuals and this results in a lot of upward promotion potential. Since managers are all promoted from within the company you know the person who leads you has been in your very shoes at some point and they desperately want to improve everything they do, from their products, to how they work with employees, to how the very industry they work in operates.
Cons
This may only be a con to some people, but Keyence expects you to work, and to work hard. This is not an easy job where everyone gets out 2 hours early on friday for the company softball game. If you want to work hard you will be rewarded, sadly not everyone wants to work that hard.