Isekai Saikouhou no Guild Rider: Guild Saijaku no Boku Dakedo, Zenin no Ai ga Omokute Guild wo Yameraremasen

I thought I would be reincarnated into another world as a mighty warrior and build a happy harem of women...! The guild I created on a whim became the most powerful guild with all the strongest members who are all good-looking guys and beautiful girls. Except for me. I'm the weakest member in my own guild. Can I quit now? It is a dark fantasy...