Mami is a really kind girl who wants to help others because she does not want to see them suffer.
Serena has stepped up and shows to other Pokémon female characters how to properly state your current feeling to the main character.
If you want that type of a Himedere like character who is spoiled and annoying, your choice would probably go to Ravel.
Mai Valentine, a confident and skilled Duelist in "Yu-Gi-Oh!", uses her "Harpie" deck to outwit opponents, often relying on her charm and intuition to gain an edge in battles.
Also known as "Tornado of Terror" in "One Punch Man", Tatsumaki is a fiercely powerful esper with telekinetic abilities and a sharp, often brash personality.
Kamado Nezuko's unwavering love for her brother and her unique combat skills against demons made her one of the most captivating characters they'd ever encountered in anime.