Cool. It's pretty rare for an author otherwise known for writing straight romance to draw convincing, sexually charged lesbian fling with believable chemistry: those stories usually stand out like a sore thumb and come off as "shy" (detached) at best when placed among other, traditionally minded smuts. And even when the artist "nails" (no pun intended) the emotional part of said relationship (as is-was the case with Harumi Chihiro from the top of my head), the physical / visual aspect is lacking.
Not a case here ; even if those narratives had been added to this collection for the purpose of driving sales up, it feels like if she'd genuine interest (or curiosity at least) in drawing them.
(oneshots 1 to 3 are fun too)