Yami to Boushi to Hon no Tabibito

The charackters are allot simulair. The plot a little to. A girl falls in love whit here sister and searchs for a way to save here in the other anime they're 2 friends who fall in love and one need so find a way to save the other. Of course there's magic in to in bote. 

Both series rely heavily on shoujo-ai as a plot device an emotional outlet. The main characters are almost counterparts in each series, Himeko (KNM) and Hatsumi (Yamibou) form a type that is played against Chikane (KNM) and Hatsuki (Yamibou), to the point that they even look alike. KNM has been hailed as Yamibou's successor and rightly so.  

This definitely will give you the same great yuri pleasures that Kannazuki No Miko has. Both a romance series and have action in it, whether it's mecha action or just adventure action.Both also shows the development of each other's feelings toward each other (Girls). If you enjoy Kannazuki No Miko, you will definitely enjoy Yami to Boshi to Hon no Tabibito. 

they're both yuri, there's nothing more to it... if you love yuri you'll watch this one too, plus the characters are like crossovers, they look the same...esp. chikane and hazuki.. ^__^ 

Apart from a number of more obvious similarities, such as the main duo having a similar appearance and personality across both shows, they also have similar problems to overcome in their relationship and feelings towards one another. In both cases you have two women who have so much trouble communicating their real feelings towards one another. Feelings of jealousy, desire, love, and affection are all lost between them because of an endless series of misunderstandings, crossed wires, and general shyness and unwillingness to be open and upfront about their feelings. Healing from the pain this causes, as well as finding a way to say what needs to be said, are important parts of their journey. read more 

Both attempt sci-fi, except in TLR it is almost deflated. Lala keeps inventing gizmos and the only thing the narrative comes up with is the same exact comedic routines invariably involving the protagonist falling, with inevitable coincidences. Lala in Yami happens to be an AI in a spaceship that cares for children. 

Yami starts off in a Baccano-esque train, which makes one think it's possibly a neo-noir, although even within this setting there are odd traits, like a traditional Japanese dress within a Siberian surrounding, and what seems like a stereotypical magic user (two sort of constants with variations throughout). 

Both of these anime tell the story of people who can travel between universes.