Passage: Otto (German: Otto Wilhelm Luitpold Adalbert Waldemar; 27 April 1848 – 11 October 1916) was King of Bavaria from 1886 to 1913. However, he never actively ruled because of alleged severe mental illness. His uncle, Luitpold, and his cousin, Ludwig, served as regents.

Question: Though he never actually ruled, Otto was King of Bavaria during what years?
1886 to 1913