If you're looking for manga similar to ES: Eternal Sisters, you might like these titles.
Sumika and Hanano have just recently become lovers. In an attempt to get closer, Hanano invites her senpai/lover to her house for a sleepover. The two are nervous and conscious of their movements since they don't want their true intentions with the sleepover to be revealed.
Two childhood friends, each with a secret. Fujoko's secret, she's a fujoshi. Yuriko's secret, she's in love with Fujoko. Will their love story start when Yuriko learns Fujoko's secret...? A love comedy between Yuri and BL.
Hagiwara Yuu has been holding the secret she likes girls from everyone and then she decides to take a chance on Nomura Chihiro.
The essential only first-year member of the struggling cooking club, an irreverent manipulative airhead, comes to the prim and proper new club president, pressuring her for "advice" (a trial girl-girl kiss). Supposedly, the newbie has recently developed feelings for an unspecified girl, suspected herself of being lesbian, and unless proven that girl-girl is not at all fun and icky after all, will quit, since cooking was only ever for raising appeal to potential future husbands anyway...
Takenaka Satsuki, first year high school student and Library assistant, is secretly attracted to her Senpai, Kitamura Kano. With the help of an accepting friend, Satsuki must learn to overcome her own sense of what is 'normal' in order to embrace her feelings for the one she loves.
When her senpai graduates, Atsuko Oono doesn't want to be forgotten and vows to be admitted into the same high school as her beloved upperclassman. Later, after successfully enrolling in Sonojo High School, Atsuko decides to join the track club instead of rejoining her senpai in the art club. However, after suffering an injury, Atsuko quits the team and begins to model for her senpai's painting. Although she is happy to be so close to her friend, it's clear that she misses the track club. Unable to let go of the past, will Atsuko be able to choose between her senpai and the call of the sports field?