They are BL Games (the have manga adaptations and Dj's tho, but some of them are not yaoi, just shounen ai or simply shounen)
In order from left to right:
* Gakuen Heaven ( http://www.mangago.me/read-manga/gakuen_heaven_higuri_yuu/ )
* Kichiku Megane ( http://www.mangago.me/read-manga/kichiku_megane/ )
* STEAL! (No manga as far as i know.. there's a BL CD tho look it up on youtube)
* Togainu no Chi ( http://www.mangago.me/read-manga/togainu_no_chi/ - plus look for the Dj's there's some hot stuff there :3 )
* Lamento - Beyond the Boid ( http://www.mangago.me/read-manga/lamento_beyond_the_void/ )
* Sweet Pool ( http://www.mangago.me/read-manga/sweet_pool/ )
Also, just in case, the guys in the background are Akira, from Togainu no Chi (left) and Keita from Gakuen Heaven (right)
It's a bit of a late reply.. but hope it helps :)
http://www.mangago.me/read-manga/hachimitsu_darling/th2/series/hachimitsu-darling.html/Volume+01/172/