Second season of Build Divide.

Based on the game by Haikuo-Soft. A story about the reunion of 4 childhood friends, Yuzuki, Matsuri, Nono and Makoto, in their deserted old school campus, Mochitsuki Academy. 3 years ago, they buried a time capsule under a tree inside the school and made a promise. A promise to meet again after exactly 3 years from that day. And the day of promise has finally arrived. (Source: AniDB)

Many years have passed since humanity vanished from Earth, yet the Galaxy Tower hotel in Ginza, Tokyo, continues to operate. At the center of its staff is Yachiyo, a dedicated hotelier robot, along with other employee robots working tirelessly in various departments. Together, they spend what feels like an eternity maintaining the hotel, despite having no guests. As they await the return of their owner and the day humanity reappears. Now, a small miracle is about to change everything for Yachiyo and her robotic colleagues. (Source: Official YouTube)

The year is 2023 and Alien Beings known as Lucifer Hawks have begun invading earth from another dimension. All that stands between them and the enslavement of the human race is the Attacked Mystification Police Department - a special division of the Tokyo Police staffed by women with amazing paranormal abilities. (Source: ANN)