In a former question it was pointed Mob appears in a cover photo of a One Punch Man manga. Does Mob appear in One Punch Man? . But also apparently Tatsumaki appears in a Mob Psycho manga (I've seen the anime but I havent read the manga), in an apparent scene of the manga itself, not a cover Tatsumaki in Mob Psycho 100
Do Mob, Tatsumaki and Saitama live in the same universe/planet kinda like Goku and Arale from Dragon Ball / Dr Slump ?