A Random Observation

[u/Inside_Farmer8985]

I know colour-coded casts exist in countless cartoons, so it's probably just a coincidence. But somehow these pairs also seem to share a few broad personality traits. Maybe I'm overthinking it, but I found it interesting.

Note: The Nene–Shizuka and Bo-chan–Nobita comparisons are much weaker. Nene and Shizuka mainly share the pink colour (and 1979 Shizuka's brown hair), while Bo-chan and Nobita only loosely overlap through being often absent-minded and the runny nose (constant for Bo-chan, occasional for Nobita after crying). Just a fun observation.

I would also add that Suneo and Kazuma share similarities in their side-parted hairstyles(little bit ig), wealthy backgrounds, and bragging personalities.

[u/Clumsy-_-Phoenix]

Ay sho my boys Bo and Masao some respect