Heaven's Lost Property

Heaven's Lost Property (そらのおとしもの Sora No Otoshimono lit., "Lost Property of the Sky" or "Misplaced by Heaven") is a manga written by Suu Minazuki and published by Kadokawa Shoten in 2007, It was serialized by Monthly Shonen Ace. The story is about a perverted but hopeful young boy named Tomoki Sakurai who wishes to free the Angeloids from their slave like mentality and the series is very great at disguising itself as a harem comedy in the beginning to send the readers in a well-written drama story about the synapse and the Angeloids.

Why It Rocks

 * 1) The concept of alien gynoids who are basically angels with a slave mentality and are used to serve their masters is well executed and very interesting.
 * 2) The designs, art and visuals are very well done and are even more beautiful when the outside of the sky world is shown.
 * 3) Likable characters such as Tomoki, Sugata, Sohara, Ikaros, Nymph and Astrea.
 * 4) Tomoki while at times a pervert and troublemaker, is still very likable as he wants to free the Angeloids from their slave-like mentality, give them freedom and happiness and stop the Synapse's corrupt control of them.
 * 5) The main themes are happiness and freedom which are well-done as it shows that you don't need to be a slave and you can choose what to do without having to feel like you're controlled by someone.
 * 6) The plot twist in the ending is very heartbreaking as Daedalus tells Tomoki that she's the real Sohara and the Sohara that he currently has is a "carbon copy" so he can still be happy and keep his memories of her.
 * 7) The story is very well-written as it shows Tomoki teaching the Angeloids to feel human traits such as emotions and needs like sleeping. The second half is when he discovers that the Synapse is the ones who are in corrupt control of the Angeloids and will do anything to stop Minos from conquering both the Synapse and Earth.
 * 8) Very humorous moments especially towards Sugata and Tomoki for most of the time which tends to be slapstick and silly even though they can get repetitive at times.
 * 9) It disguises itself as a harem comedy to send the readers into the later parts being dramatic and making them learn the great messages of freedom and happiness which does it very well.
 * 10) Awesome and great battles such as the fight against the Harpies and Ikaros's clone, Ikaros Melon.

Bad Qualities

 * 1) The humor can feel bland at times.
 * 2) Some characters have their unlikable moments especially Mikako who tends to turn Tomoki into a punching bag as well sometimes towards Sugata.
 * 3) The ending is rushed while Tomoki did get his friends and everyone back. Minos also came back and it's unknown if the Harpies kill Minos or not though it does lead theories that they did kill him after the ending.
 * 4) Siren an Angeloid, got killed way too fast by Chaos before showing her powers and what she's capable of which makes her pointless to be created in the first place.