Please Save My Earth - Recommendations

Alt title: Boku no Chikyuu wo Mamotte

If you're looking for manga similar to Please Save My Earth, you might like these titles.

Nayuta

Nayuta

Nayuta is a normal school girl, until she meets a young boy named Kiro trying to help his sick mother. Nayuta takes them to the hospital, but there Kiro's mother vanishes without explanation and Kiro runs away. Later that night Kiro shows up at Nayuta's house and shows her his psychic powers, enabled by a mysterious tiara he wears.

I agree

Bokura wa Bara no Ko

Bokura wa Bara no Ko

Yukinari was abandoned as an infant, but fortunately a loving family adopted him. Perhaps because of this, he has an affinity for helpless, abandoned creatures and goes out of his way to help them. One night, Yukinari and his friends witness a falling star hit the ground and rush to the spot where it hit, only to find a child cradled in the meteorite, surrounded by a field of roses?!

I agree

Locke the Superman

Locke the Superman

I agree

Meteor Prince

Meteor Prince

Strange accidents always seem to happen around Hako Natsuno—so much so that she’s been dubbed the “Queen of Bad Luck.” It’s hardly surprising then that a naked alien prince falls from the sky to tell her that out of all the girls in the universe, he’s come to Earth to mate with her. Does this mean Hako’s luck has changed, or…?

I agree

Hajimari no Niina

Hajimari no Niina

10-year old Niina is special. This is because she has the memories of her past life as a girl named Chitose still intact. Among these memories is a promise with Chitose's boyfriend which Niina then decides to try and fulfill. But can she really?

I agree

Takopi’s Original Sin

Takopi’s Original Sin

Cute little alien Takopi lands on Earth. What is his mission? To be taken to our leader? No. To spread happiness throughout the universe! The first person Takopi meets is depressed fourth grader Shizuka. (Or is it…?) Takopi is determined to do whatever it takes to make Shizuka smile again. But his misguided attempts to help her by using his advanced technology to turn back time only result in mayhem and death. What is the truth Takopi can’t remember? And what must the pink alien octopus with a heart of gold sacrifice to truly help Shizuka and her friends…?

I agree

Sayonara Watashi-tachi

Sayonara Watashi-tachi

The near future, the afterworld, and the perfectly normal present day. The five stories in this collection revolve around the girls who deal with the uncertainties of fate; sometimes happy, other times grim.

I agree

Yokai's Hunger

Yokai's Hunger

Norito Ogami, an average student, has a tendency to attract demons. Koma appears before Norito, in accordance with the "Sigil Oath," a promise Norito made in his past life with Koma. The two are attracted to each other but Koma's siblings and his beautiful archenemy stands in their way...!? Yokai's Hunger is an eternal love story between a high school senior and a middle-aged beast brought together by fate!

I agree

Elfen Lied

Elfen Lied

In the near future, some girls are born mutated. Known as Diclonius, this new species is believed to have been chosen by God to wipe out mankind. Unlike regular humans, Diclonius have two horns on their head and ‘vectors' - invisible ‘hands.' Contained within a research facility unknown to the world, the Diclonius are experimented upon mercilessly; many die or develop a hate for mankind. One such creature, Lucy, is said to be the first of the Diclonius. She escapes from the facility, but while fleeing she takes a bullet to the head and is seemingly killed. However, it seems Lucy isn't quite dead yet; she's instead developed an alternate personality called Nyuu. She's washed up on a shore where two people, Kouta and Yuka, find her and bring her home, unaware that such a monster still lurks within Nyuu. 

I agree

Assassination Classroom

Assassination Classroom

The students in Class 3-E of Kunugigaoka Junior High have a new teacher: an alien octopus with bizarre powers and unlimited strength, who’s just destroyed the moon and is threatening to destroy the earth—unless they can kill him first! Meet the would-be assassins of class 3-E: Sugino, who let his grades slip and got kicked off the baseball team. Karma, who's doing well in his classes but keeps getting suspended for fighting. And Okuda, who lacks both academic and social skills, yet excels at one subject: chemistry. Who has the best chance of winning that reward? Will the deed be accomplished through pity, brute force or poison...? And what chance does their teacher have of repairing his students' tattered self-esteem?

I agree