Aoi Hana, Yagate Kimi ni Naru Recommendations
Both are yuri, and have similar settings; I think Aoi Hana is the better of the two, granted, since while it is also slow boil, the heroines have a pre-existing friendship to build on rather than the suddenness Bloom Into You goes for.
Both series are slow burn romance between females.
Both has more portrayal of the relationship between each protagonists, and how they thought.
Both has more stories about side characters.
These two yuri shows are far from your typical romance anime. Instead of having the main pair fall in love with each other right away, the series focus on the complex relationships between the characters and how their feelings develop. The side characters and their relationships are also an important aspect of the plot, whereas most romance anime predominantly focus on the main cast. If you're looking for a character-driven yuri series with plenty of development, you should definitely give these two a try.
Both anime are very good Girls Love-SOL-anime with a slow burn romance. You surely might love the other one as well.
Both anime have a set of characters that learn about first love and themselves from self-reflection rather than having them to be mostly a romance. They're NOT yuri anime with a lot of unnecessary fanservice. It depicts love realistically in general with social consequences along with it. These two shows are not your typical yuri anime you would normally find.