The teacher can not tell me love

High school teacher Rinko Yoshitaka is racking her brain about Arase-kun, a student of hers who's nothing but problems. He doesn't turn in his homework, is always late, and is prone to dozing off in class. At school, he's apathetic and unmotivated, but after school, he says "please thank me, because I gave you an excuse to call me." And so, she gets doted on by the earnest, kind yet apathetic young man?! It turns out that she's more than just his teacher, but not yet his lover! Thus begins the comedic romance between this pair with a significant age difference! (Source: Shogakukan)