Essentially a prequel to the anime, this series is centered around Satsuki and Nonon's relationship, and begins during their first year of middle school. It explores how things came to be. And feelings. Rated M just in case!

After the Goddess fell, all of her children became trapped in the void between worlds known as the Shadow Realms. When Lightning arrives unexpectedly from her voluntary stasis, she's told that with Etro gone she will never wake up; but would that really be so terrible, when she'd be allowed to spend eternity with her sister? •Lightning/Serah•