First off another of hundreds of total BS mislabed as harem manga... for the perma-virgins in the cheap seats its not a harem of nobody is doing anything no its just some op loser with a tiny wanker surround by hardcore plot super forced affection to a loser who will die a perma-virgin despite behind surrounded by chicks rdy and willing chicks 24/7 or to sum it up your avg beta japanese male...
As for the other story just from the description alone I can sum it up... some op in battle yet the ultimate cowardly beta bitch trash loser with chapter after chapter of some shit stain squealin and cowering turd freaking out every time a chick so much as brushes shoulders or accidentally touches his hand all for the purpose of never letting a female see him naked and discovering he has a micropenis.
Typical false advertised crap mainly aimed at the most beta basement dwelling life rejects in existence which almost exclusively live in japan.