Yahari Ore no Seishun Love Comedy wa Machigatteiru.

Synopsis

Yui stops coming to the Service Club meetings and seems to drop out altogether following her previous encounter with Hachiman and Shizuka tasks them in recruiting a new third member. Yukino proposes that she would like Yui to rejoin the club by celebrating her birthday. Later that weekend, they visit the mall to shop to present shop for Yui, with little luck. The pair eventually settle on purchasing some trendy accessories for Yui until they run into Yukino's older sister?Haruno Yukinoshita?who playfully teases them with her transparent persona. Much to their surprise, Yui also runs into the pair and Yukino invites her to the next Service Club meeting. At the next meeting, Yukino explains to Yui that they intended to celebrate her birthday and thank her for all the things she did for the club. Hachiman also uses the opportunity to clear the air with Yui and explains that she does not owe him anything and hence, should not pity him. Yui argues that she never thought of herself as pitying him but the complexity of the situation leaves her at a loss for words. However, Yukino helps repair the rift between them by sincerely explaining they should drop their current situation and begin a new path, which they decide to take. (Source: Wikipedia)