Koi ga Saku Koro Sakura Doki - Graceful Blue

From MangaHelpers:

This manga is based on a adult erogame. The main male character is Asaba Yuma, and the story follows the school life he shares with many girls and his one male friend. These girls include Tsukishima Yuri and her twin sister Hanako, who is in the newspaper club, Yuma's little sister Konami, who likes shogi, and several others. Will Yuma find love in his teenage years? [tethysdust]