Sayuri-san no Imouto wa Tenshi
小百合さんの妹は天使
The Kobayashi siblings, Sayuri and Makoto, were separated thirteen years before the story begins due to their parents' divorce. One day, Makoto unexpectedly shows up near Sayuri’s workplace, a flower shop, appearing with wings and a halo. She explains that these angelic traits were given to her by a divine being in response to her wish to reunite with Sayuri. Makoto then moves in with her sister.
