Seven Roses is a story written by Runa Yukarin. It ran in Issue 46 at http://s2b2.livejournal.com/264519.html, and is mirrored at http://www.shousetsubangbang.com/mirror/seven-roses/.
From fail-fandomanon.dreamwidth.org: "Vega and his sister invite a stranger into their home. The stranger's name is Altair and each month he returns, and he and Vega fall in love."
- fairyninjas.wordpress.com: "An intriguing little fairytale-esque story."