If you're looking for manga similar to Aimer - Part 3, you might like these titles.
Every night, one amazing high school student is haunted by nightmares of an evil alien invasion. When his dreams start to come true during the day, things really get weird!
The world is being assimilated by a crazy religion, and to stop it I have become their satan. The religion is controlled by aliens, and people don’t have a clue. The world says that aliens don’t exist, but they are everywhere. How am so I certain? Because I am also an alien.
If you could be teleported down to the planet’s surface, will you fight against aliens to save the last human beings? Now, here are the heroes, Class S, who fight against aliens with AB swords to protect you.
On a planet full of different species, earthlings are looked down upon. As Misha struggles to fit in, she comes upon an unusual shop.
Which star shines the brightest in this endless darkness? We begin our dive into space to take hold of this shining star.
Fai's visions always come true, and they've gotten worse just before the new transfer students arrive. What could Fai and her new friends possibly do to avoid the doom that was promised? Good thing they're not regular kids at all!
Ordinary senior high school student Shen Zhongyi accidentally discovered that his crush is an alien employed by the Milky Way Customer Service Department. The department handles various incidents caused by travelers (aliens living on Earth) and “deals with” native Earthlings who either know about, or are somehow involved in any incidents with, the travellers (by deleting memories, altering memories, or eliminating the person completely). To avoid being annihilated and losing his memories of her, Shen Zhongyi started a part-time job in the Milky Way Customer Service Department, where dangers and perils abound!