Ken

Ken Watanabe (渡辺 健, Watanabe Ken) is a character in Kageki Shojo!! series.

Appearance
Ken is an elderly man who is bald at the top and has a mustache.

Plot
Ken receives a letter for Sarasa Watanabe from Kouka Academy of Music that he rushes to find her and gives it to her. At his tatami shop, people have heard that Ken's grandchild got a letter from Kouka and gather. The people are happy that they may end having someone famous from their region, but wonder if she will be okay as she will need to live in a dorm with someone else as she only lived with her grandfather so far. Sarasa starts to worry that she will leave her grandfather alone, but Ken yells at her to finally open the letter and that her grandmother's dream was Sarasa to enter Kouka.