@Dat_bois1
Fairly common in Japan, many there believe in affinity between certain blood types affecting the potential compatibility of persons in a relationship, there's also blood type based fortune telling found in some publications.
I'm more inclined to sympathise with her, she doesn't even understand her own feelings so she defaults to contempt & in turn undermines her own happiness.
@TeslaBean I don't know, managing 3 "completely accidental" paizuris in a row strains credulity a smidgen, I'm fairly certain he's molding these bizarre scenarios himself to a degree.
Page 4 explains how Kawara manages to survive the multitudinous injuries he sustains, he's made of play doh, meanwhile Nanako must be a robot to break a window with her bare butt without even a scratch, would explain why she's still so naïve.
Read this the same day I tried making a pencil sharpener with safety razors, I can tell you from experience there ain't nothing safe about a razor, especially where a drill's involved.