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Bicycle manufactured by Maruishi.
The kangaroo symbol is one employed by them. They also use a kangaroo symbol where the animal is stretched out at full gallop.
Serial placement & format consistent their pattern.
Your dating appears spot on.
Gears Shimano, brakes Cherry, chainset likely Takagi, pedals either Mikashima or Kyukuto (not shown well enough to tell), pump pegs Primus.
Frame's bulge-formed head produced by Nikko-Sankyo.
Tip -
readers can give more and better information on bicycle identifications when drive side photos are posted.
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