Deimos no Hanayome: Ran no Kumikyoku

Both have a gothic, dark style to them with a dark Male companion. Uragiri is more of an action based show whilst Deimos is a mystery show pilot. But if you like one, you will certainly enjoy the other. 

both are dark shoujo stories with a dark, obsessive, powerful long-haired aggressive lover that suddenly enters the main character's life. 

the art style and over all feel is very similar. both are melodramatic shoujo animes. 

both are dark romantic supernatural suspence shoujo incomplete ovas from the 90's. the main character is resembled, and they both go through life-shattering moments. 

both are dark romantic supernatural suspence shoujo shows from the 90's, both have a strong female lead as a main character which is surrounded by mystery and danger, sometimes unknown to her. both have flowers as a visual motif and greenhouse locations. they also both have characters that have regretful childhoods and childhood trauma flashbacks.