Does this have harem esq elements? Women fawning over MC for breathing?

Not exactly. All the girls treat him like fellow classmates/besties, one is cousin, some are summons

Alright thanks

Imo, if there's gonna be any romance, probs with one of his old comrade Lysinas but she died 5000 years ago so idk how they gonna do dat unless they bring them back somehow thru reincarnation or with any other means. Which means that's probs long time from now if there was gonna be any.