Toradora!, Astarotte no Omocha! Recommendations
Both are tear-jerking, heart-warming, touching, and astounding love stories with a female Tsundere protagonist (both voiced by Rie Kugimiya).
Both anime have the same CVs whom is Rie Kugumiya
Both of the characters are tsunderes
Both characters make their male friends as servants. In Toradora, Taiga make Ryuji as her dog and in Astarotte, Astarotte Ygvar make Naoya Touhara as her 'toy'