Hosaka-sensei no Ai no Muchi

I don't quite get why this one is so unpopular. It's such a beautiful and heartwarming story. It's short, and it starts out a bit weird with Hosaka basically being emotionless, but it's totally worth it. The story doesn't need any forced drama between them, or those unrealistic situations of one love rival after another being thrown at the main couple. In this manga, you accompany Kawai, a scary looking woman, and Hosaka, a very rational and more or less emotionless man. They both work as nursery teachers and start dating pretty early on. Needless to say, those two teachers with very different personalities allow this mangato show interesting interactions with the children and show different ways to explain things to them. I feel that especially those dialogues to the children were really well done, and were really fitting to their personalities. After a timeskip in the final chapter you get to see the children after graduating highschool, visiting Hosaka and Kawai, telling them about their future plans/dreams and thanking them for what they did. Especially since Kawai was the type of person who pours her whole heart into her job as nursery teacher, I found this moment really heartwarming.