Floralia

Our protagonist Yosuke Tachibana is a kind second year in Aohisashi Academy who likes to take care of flowers. However, his average life is turned upside down when his sister-like childhood friend Suzune Asou is appointed as a teacher in his school. What's more, she'll live in his house? Soon they'll be joined by director's daughter Maki Izumi and chemistry teacher Shino Sakurai. Will he succumb to his teachers' temptation...? [based on translation from Japanese Wikipedia]