I think the truth of the matter is shown in a later chapter, though what already is stated would be against Junpei being the Kichiza. The house has the Abashiri family name on it quite oddly.
It isn't some little kids' manga, it's targeted for teens. If you like slice of life with some supernatural ESP, then this is a fine manga. The creator is the same as Doraemon, so you can expect a similar style.
box.animerunkkari.org/Mangat/Suomi-skannit/ tuolta boxixta olen tänne uppaillut, jos jotakin kiinostaa upata niin vapaasti kaikki egmontin mangat voisi ladata tänne.
Crazy thing about Black Lion is that it was initially written in 1965, though redrawn in 78. And I would say the undercover unkillable robot was first drawn in Abashiri Family. Still the feeling I got from this VJ chapter was of emotionles mad machine (only in the first half of the chapter).
The 3 other short stories collected in the volume print have also been collected in other story collections, with more related chapters, so it is unnecessary to include them here.