Mahoutsukai no Koi

From Nakama: Without worries about girls or money, halfheartedly living Nishizaki meets the love of his life on campus. A lover who bites his lips when happy… Araya is always troublesome, gloomy, and without desire. Thinking of him, Nishizaki’s teeth always hurt… Ch. 3-5: Younger, shorter Souji falls in love with Natsumi on a bus after Natsumi unthinkingly lends him his umbrella. Souji sets out to get to know him and to woo him. Ch. 6: Ichigawa and Azumi, though they go to the same school, don’t know each other well. Despite that, they both take a train to see the aurora borealis. Ch. 7: Akinobu’s neighbor Andou never sorts his trash correctly.