YMDD-245 Homeroom teacher: School trip alone with students

Hey, my dear teacher...I've been waiting for today for three months now. - First Yamanote Line, first Harajuku, and last date. - I loved my teacher so much that I was really happy that we could come on a school trip together! - Hey, Nana is the happiest girl in the world, because now the teacher is Nana's first person. - I'm glad that the teacher was the first person to touch Nana's important parts. - Teacher, please call me "Nana" until morning. - Let me be special to you, teacher.