You might just have to add this fun + function highlighter that underlines at the the same time  as you highlight to your bevy of writing tools.

Underline, highlight, create borders or 3d lettering with the Sakura Mixline.  Creates a highlight line with a thin contrasting line next to it.  There is also an additional fine tipped marker on the other end for extra detail drawing.  Addictive.

Is our description hard to understand?  Please look at our pics=)

Made in Japan