Chuyển Sinh Thành Đệ Thất Hoàng Tử, Tôi Quyết Định Trau Dồi Ma Thuật

Tensei shitara Dainana Ouji Datta node, Kimama ni Majutsu wo Kiwamemasu, I Was Reincarnated as the 7th Prince so I Can Take My Time Perfecting My Magical Ability, I Was Reincarnated as the 7th Prince, so I Will Perfect My Magic as I Please