If you're looking for anime similar to +1: High Tension Basketball Story!, you might like these titles.
Yuzuru Hagino isn't just a girl - she's a slave. Her "master" is Kai Renge, a sadistic womanizer who enjoys playing with his "honeys" - students who have their expenses paid in full at Houjou Academy in exchange for helping their masters graduate - and then throwing them away. All Yuzuru wants is to excel at her studies, but she must also fend off Kai's wandering hands and dodge his onslaught of degrading insults at the same time. With master/honey basketball games and competitor masters out to steal her away, Yuzuru will do whatever it takes to impress her master and graduate the Academy.
Barangay 143 is a gritty story where the stakes are high, about never giving up and a game called life. Bren Park who loves basketball rejects his destiny to become a great player when tragedy strikes his family. He swears never to play basketball again and journeys to the Philippines where he finds his way back to himself, his heart and the game. In Manila, legendary basketball coach, Coach B seeks justice for the death of his son. He begins by using the very game that took his son from him, to find the culprits and bring down a syndicate. But he needs a captain, a leader who will take his ragtag team of misfit players to victory. Tied by their tragic loss and by the game that took everything away from them, Bren and Coach B soon through basketball find peace, justice, forgiveness, redemption and love.
All the masters of the world are those who overcame their handicaps. The First Step holds a story about young people’s journey overcoming their handicaps through street basketball.