This is harem?
NO. There's no such tags from below: https://www.novelupdates.com/series/instant-death/ https://www.mangaupdates.com/series/6t6ibvh/sokushi-cheat-ga-saikyou-sugite-isekai-no-yatsura-ga-marude-aite-ni-naranai-n-desu-ga
This is harem?