If you're looking for manga similar to Algae, you might like these titles.
Childhood friends Yae Akane & Sakura Kasumi were inseparable as children until Yae and her family moved overseas. A few years later Yae is back and they are in the same school but now Sakura continuously ignores Yae?
Saki can't seem to keep her desire for her best friend Masono at bay. Will she confess her feelings to her and risk losing their friendship, or will her self-control win out?
A young woman starts working for a club for "girls who like girls", and is introduced to the the woman who runs it.
When a girl passes by her classmate in a corridor, she notices a sweet fragrance she's never smelled before. She asks the other girl about her shampoo but still can't find the scent's origin. Just where did it come from?