羽山先生と寺野先生は付き合っている (Series) favorite_border

[DeepL Translation - needs review] Volume 1 Introduction: For the first time, I fell in love with someone. For the first time, I confessed my feelings. For the first time, I kissed someone. I was so overwhelmed with feelings of "I love you" that I couldn't do it well, and I fell in love with you more and more every day. This is an adult coming-of-age romantic comedy depicting the first time love between Mr. Hayama and Ms. Terano.

(Translator: DeepL)