 If you liked
Maou no Ore ga Dorei Elf wo Yome ni Shitanda ga, Dou Medereba Ii?
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 ...then you might like
Kujibiki Tokushou: Musou Harem-ken
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You are looking for a genre where the MC always has Heroine side? Hard to say, I know you like things about maids and I recommend the Maou Dorei Elf after you read the Musou Harem. It has in common that the MC is always followed by girls, you could say she is the servant.