Hmmm.....kinda sad. By now, they've....*ahem* in the novel which hasn't been hinted at at all here, and when that happened, there was a funny scene about his mom be.....oh yeah, that didn't happen in the manga either. Oh well.
@ThyUnsuspicious It's hardly surprising if a manga adaptation ends up removing all such elements, especially a shounen manga adaptation. This is an exceptionally mediocre story, though, so it could have certainly used any extra spice.