''Indigo Blue'' is a GirlsLove {{Josei}} manga by Ebine Yamaji.

Rutsu is content with her life. She has a budding career as a novelist and a functional relationship with her boyfriend/editor, Ryuuji. However, when she meets Tamaki, a lesbian fan of her work who sees homoerotic subtext in her writing, Rutsu is forced to reconsider her sexuality and what she wants from life.

!!This manga provides examples of:

* ClosetKey: Tamaki is Rutsu's
* DotingParent: Den
* {{Gayngst}}: Tamaki tries to avoid {{Gayngst}} by vowing to only date fellow lesbians, but [[FailureIsTheOnlyOption then she falls in love with Rutsu]], who has a boyfriend.
* LoveAtFirstSight: Tamaki for Rutsu.
* LoveHurts
* MostWritersAreWriters
* RomanticRunnerUp: [[spoiler: Ryuuji. It's not that he's a bad boyfriend he's just the [[IncompatibleOrientation wrong gender]].]]
* UnwittingInstigatorOfDoom: Den is the one who accidentally [[spoiler: tells Tamaki that Rutsu's still with Ryuuji and is two-timing them both.]] To be fair though, they probably would have found out eventually.
* WriteWhoYouKnow: InUniverse. Rutsu's stories mirror her real-life events.
* YourCheatingHeart: [[spoiler: Rutsu ends up dating Tamaki and Ryuuji at the same time, without them knowing about it. It comes back to bite her in the ass when they find out.]]