Iona - Sexy Dynamite in Elementary school

あらすじ

Shu Endo, a fifth-grader at Konomiya Elementary School, finds his life turned upside down when his homeroom teacher goes on maternity leave. Her replacement is Iona Igarashi, a beautiful and enigmatic woman whose unconventional fashion sense and blunt personality set her apart from typical educators. Iona's presence creates a stir among the students, including Shu, who becomes her particular focus.