Here the much more experienced Kinuko is teaching she son's student Ayako a lesson, Never tell a ninja with several lifetimes of training under her belt that she's a weak old pussy. Said pussy is likely to kick your ass without breaking a sweat.

Some practice at non-digital inking. I think it came out pretty good myself.

Kinuko and art are mine

Ayako is  thunderstep's

Special thanks to  bagheera for help with the pose