He until I read in the novel, doesn’t want a harem and even say the girls are “daughters” to him (except big sis elf, for her he says lover and actually do act as a boyfriend to her), he sticks to this but big sis elf gave a hint that elfs aren’t monogamists and she and little sis are actually half-sisters from different mothers, I think the harem route will happen if his audience in Japan want so