GodOfGreedAs
Ok if is a harem 3 or 4 max. Emilia is a definite as well as Rem,Crusch. As for the potential 4th I'd say Felt or Ram. I'm not sure if the mc will get some memories or something from Arthur but it may help him with their kingly mindset. Arthur took the sword as they felt it was their burden to bear they have similar circumstances to Felt as both were royalty and were placed in positions of power, so I think it could definitely be interesting as he can sympathize and protect her or something. As for Ram I really don't have much outside that she's cute and Re zero why me made me like her a lot.
If there’s only one then probably Emilia but I would prefer to include ram as there personality mixes with his better. If you decide harem then Emilia, Rem, Ram. Other people I think fit would be Satella, maybe we could teach echidna what emotions are and add her. There are others that could work but adding more would probably ruin the story and harems story’s can already be messed up easily and more women make it even more difficult so if you do decide harem don’t go overboard. Nice chapter!