Includes one extra chapter and two side stories: 
Kikkai tai Omorai - Kasu Tougi Sekaiichi Ketteisen (キッカイ対オモライ カス闘技世界一決定戦) 
Omorai-kun 2001 (オモライくん2001)

Maka Kikkai is an elementary school student who calls himself a handsome boy on the cutting edge of scientific civilization. He tries to live a comfortable and convenient life with the help of his tutor Mashin Hakase's, and his father's inventions, but he always fails and causes a big ruckus.

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