Shun and his older brother have a little strange relationship...

There is also Koganei from Kusatta Rasen, and the Makino brothers appear in Ayaui Kyouen; both short stories are collected in Rakuda Tsukai to Ouji no Yoru.

Short story about the Udou brothers' very different love lives.

(Source: MU)

How wonderful dormitory life is!
Two students killing time while they're waiting for their laundry to finish.