In this fantasy world, everything's a game--and these gamer siblings play to win! Meet Sora and Shiro, a brother and sister who are loser shut-ins by normal standards. But these siblings don't play by the rules of the "crappy game" that is average society. In the world of gaming, this genius pair reigns supreme, their invincible avatar so famous that it's the stuff of urban legend. So when a young boy calling himself God summons the siblings to a fantastic alternate world where war is forbidden and all conflicts--even those involving national borders--are decided by the outcome of games, Sora and Shiro have pretty much hit the jackpot. But they soon learn that in this world, humanity, cornered and outnumbered by other species, survives within the confines of one city. Will Sora and Shiro, two failures at life, turn out to be the saviors of mankind? Let the games begin...! (Source: Yen Press)

There are twenty independent stories written by twenty different authors, sharing the common theme of "April". An anthology that is considered a rare item as it has never hit the shelves as a standalone book. There is no ISBN and it is an unbuyable except in online auctions. The anthology was published as a bonus gift to Dengeki Magazine readers in 2009.

Corruption spreads throughout the desert kingdom. Under the name of peace, villains among the powerful move in the shadows. Amid the people’s growing discontent, a legendary female assassin known as “Bloodhand” emerges. Wherever she appears, a bloody handprint is left behind — and after taking her target’s life, she vanishes without a trace. Celebrated as a peerless beauty by both the commoners and the rulers, she carries a hidden secret that no one knows…

A very sweet Youmu x Yuyuko. Also a bonus story of Youmu x Reisen.

Reisen confronts Marisa about recklessly borrowing others' possessions.