Heaven's Lost Property

Tomoki has another dream where the mysterious angel warns him of another Angeloid and after revealing the information to his friends, Nymph suggests they visit his dream via Dive Game which enables them to visit humans' dreams. The group, consisting of Tomoki, Sugata, Mikako and Suhara, leave into the dream to find themselves confronted with each other's dreams and an embarrassing revelation for Suhara. Ultimately, they are unable to visit Tomoki's dream and instead land on a bizarre world with a pillar with illegible words and hibernating evergreen trees. They return with more questions than answers and Sugata finally remembers a forgotten memory a year past when Ikaros first fell onto the Earth and winesses Astraea's arrival.