Katakoi Paradise
One-Sided Love Paradise
片恋パラダイス
University student Hitoshi Kawase's love interest--- not only is it another boy, it's his older brother! Faced with a love that will never be realized, one day Ikegami Natsuhiko appears as a fellow classmate with similar looks to his brother. Although the two continue to become closer, Hitoshi still feels his heart drawn to his brother.
(Source: Comixology)