Kono Yo wa Tatakau Kachi ga Aru

Kiri Ito has been working for three years. Full of negative energy, with an unfulfilling job, a sexually harrasing boss, and an unfaithful boyfriend. Just as the office lady was reaching the end of her rope, she receives a letter... At 25 years old, it is time for a new reckoning on life. (Source: Big Comic Bros, translated)