Responses
I'm pretty sure it's an unspoken rule not to mention that. I mean like third years being third years from the MC's 1st year to their 3rd... such things are a forever unchanging part of our favorite High School mangas.
Did they go through 2nd year(11th grade) for two years? Cause when the story starts, they're 2nd years and by chapter 22 a year has already passed (they go through two Christmases and one summer vacation) and yet Ito and Makoto are still in 2nd year and Tsugumi is in 3rd year. I know weird timelines sometimes are included in long school life mangas but damn Mako's just trying ta graduate.