>>536483483
>created
anon I don't think you understand how reality works. This genre wasn't "created", it formed and evolved over time due to natural supply and demand because men are naturally harem oriented, biologically.
For thousands of years harem was reality rather than fiction. Otaku media is indulgent by nature which means it is harem oriented since that's what straight men naturally gravitate towards when indulging biology unadulterated.