If you're looking for manga similar to Omoi no Kakera, you might like these titles.
A young woman in an unfulfilling relationship fantasizes about the woman she had fallen in love with.
Ayu and Hitsuji have been friends since kindergarten, but when Hitsuji tries to take them a step further, Ayu panics. Trying to maintain the blurry boundaries of their friendship proves difficult however when she soon has to watch helplessly while Hitsuji is gravitating towards the new music teacher.
Two best friends, one of whom, Ayame, is in love with the other, Amane. Each chapter follows the hijinks of Ayame's advances towards Amane, which usually end up in comedic failure.
Hopelessly in love, high schooler Uta must navigate living with her brother and Kaoru, her crush … and sister-in-law. Desperate to get over her unrequited feelings, Uta pulls away, but when the cracks in her brother's marriage begin to show, Kaoru begins to confide in her new teenage sister, which just makes matters worse!
Imagine if there was a place for women to go, where there were beautiful women to cater to their needs, to help them relax, cast off their world-weariness and find themselves in an aura of refined luxury and sensuality.
When Yuiji overhears his classmate Yamato confessing to a friend that he's gay, he does his best not to let prejudice color his view, but still finds himself overthinking things. He especially notices the way Yamato looks at one particular boy: Yuiji's own best friend. Even though he tries not to get involved, watching Yamato's one-sided love draws Yuiji in in a way he never expected. At first, he’s fueled by empathy, knowing that Yamato’s love interest is straight. But as his own friendship with Yamato deepens, Yuiji realizes how much he's come to care for his new friend. He just wants Yamato to be happy... and to be able to express his true self.