Okujou Fuukei

Chapter 1-5 and extra (Ch. 8) - Okujou Fuukei (and other titles)
Though he was never aware of it himself, Minaguchi was always watching Andou. After being separated into different classes, Minaguchi found that the lack of Andou's presence actually developed into a sense of empty loneliness. But by coincidence, Minaguchi discovers that Andou always goes up to the rooftop on Tuesdays... (Source: bliss)

Ch. 6 The Vast Summer Sky - (Natsu Manten) -
Yuusuke hasn't seen his uncle Toshiya in several years, a man whom he had felt especially close to, but he finds out there are some things he doesn't know.

Ch. 7 Love is Neither Dream Nor Flower - (Koi wa Yume demo Hana demo Naku) -
Hirochika meets a man at the convenience store and for some reason goes back to his apartment. He continues to meet Tsukamoto every week and they develop a sexual relationship but Tsukamoto is still in love with someone else.