If you're looking for manga similar to Toradora!, you might like these titles. All recommendations are made by Anime-Planet users like you!
Both of these series are set in very different worlds, but have similar main characters and relationships. Both follow a growing relationship between a violent dominating female lead (tsundere) and their downtrodden male companion. If you liked the characters in either then you should check out the other.
Kashiwada Naoki was determined to lead his high school life without anyone knowing that he's an Otaku. However, his classmate Bishoujo, Koigasaki Momo, who was rumored among the girls to be a witch, found out about his secret!? Before the despairing Kashiwada, she said something undoubtedly surprising. "Aren't you an Otaku? Then, make me into an Otaku!" The love story of two individuals bounded by an agreement of Otaku and Riajuu starts!!