Solo Katsu Joshi no Susume

Megumi Saotome is a contract employee in the editorial department at a publishing company. She is invited by her colleagues to join them for a drinking get-together, but Megumi Saotome declines their offer. She leaves quickly after work. The reason why she is in such a rush is so she can have a "solo katsu." She enjoys solo activities like eating alone at restaurants, having her own party, and staying at love motels.
(Source: AsianWiki)