If you liked
Harukanaru Toki no Naka de: Hachiyou Shou
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...then you might like
Koisuru Tenshi Angelique: Kagayaki no Ashita
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They're both r-harems where the girl gets transported into a world with magical handsome men, but beyond that I think they've got similar tones and visual styles. They've also both got world-saving plots, although Harukanaru is a little more action-based and Angelique is less so? I think that if one appeals to a person, the other also might.