Wakaba-san Chi no Aoi Koi

The four sisters of the Wakaba family are all in the midst of their “first love” right now. The eldest sister, Kokoharu, is in love with a senior at her part-time job. The second sister, Manatsu, likes a guy in the Archery Club. The third sister, Akira, is interested in a club-mate the same age as her. The youngest, Chifuyu, likes a boy in her class. The four sisters, who are close friends, obsess over their love problems day and night. How do you tell someone you love him!

(Source: Sunday Webry, translated)

Note: Includes five extra chapters