PLUS SIZED PERVERSIONS

 No culture on this planet has ever been as devoted to perversions, particularly of a clansgressive nature, as the Japanese, judging only by their manga. One example is a short-lived series called SIS PLUS, concerning a family whose parents are presumably deceased, since the four siblings-- an older brother and his three younger sisters-- eke out their living with a cake shop. The brother's never given a name except "Onee-chan," which means "brother," two of the girls, Shiho and Cocoa, are teenagers, and the last, Himeka, is said to be in elementary school by the translation but she looks more like a middle schooler. The comic gimmick is that Onee is fiercely protective of his sisters, fighting any male who comes near them, though he himself has no boundaries, insisting that his sibs should bathe with him or searching their private belongings for incriminating evidence, as in the scene below.                                                                                                             

Cocoa and Himeka often just humor their crazy brother, but Shiho frequently protests the crossed boundaries by beating up Onee. She gets a job doing anime voice-work, and in one of the scenes below, she clobbers Onee so that he won't hear a recording for which she made "sex sounds."                                                                                 

  

In the second story, a clandestine terrorist group kidnaps Himeka, who's a genius and whom they think they can use for making weapons. Himeka rather easily falls in with the group, seeming to "brainwash" herself, and when Onee comes to her rescue, Himeka repeatedly pounds him with a big hammer. This is one indication that Himeka might be older than elementary school, since both she and Onee seem to be "getting into" the violence, until Shiho terminates the domme-play by punching Onee.