One, Two, Three, Four, Five, Six, Seven
Our story begins with a recap of Astro's origin. This time, Tobio crashes because the car won't stop. Dr. Tenma builds Astro, and things are the usual.
Tsugio's father puts his son in a headlock
Turns out, it's all a manga being read by our boy hero Tsugio, who suspiciously resembles the title character in the 1987 "David and the Magic Pearl".
Father likes his robots, Tsugio goes to school
As we can see, Father is interested in robotics and has constructed a mouse robot. I'm sure he's also stating that he wants his son to get into the biz as well.
Astro is not a horse
Tsugio seems to have a bullying problem, and he wishes that Astro Boy were his friend so Astro could protect him. With that, he runs into...
The bullies
They steal his glasses and books and throw them in the garbage pile, so Tsugio gets looking and finds...
Cat in a box, Clean it up
He takes the cat home, washes it, and notices the cat kinda looks like Astro. The cat immediately takes over the house, clawing everything and crapping in Father's mousebot maze. Mother gets antagonizedas well, with the cat digging up various creatures and bringing them inside.
OW
The final straw comes when the cat meows one night, causing Father to throw a clock and accidentally hit Mother. The next morning, Mother tells Tsugio that he must send the cat away.
No brakes!
Tsugio and the cat are heading down a hill. The boy is depressed that he is about to lose his new pet, when he decides to stop the bike. Tsugio suddenly realizes that his brakes don't work. That, and there's an appoaching car up the lane!
WHAT WILL HAPPEN TO TSUGIO AND ATOM CAT? ARE THERE ALIENS IN THE CAR? FIND OUT TOMOROW, AFTER I SLEEP AND FINISH A PESKY ENGLISH ASSIGNMENT! 
What a cute story! Thanks a lot for your effort of providing us with those scans!
