Sequel
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Since the conclusion of the original series, Rin and Arisu are leading happy lives. Their son, Ren, is a very normal boy. But one day, a man and a woman as beautiful as an angel appear in front of him and tell him about a power! What is this power Ren suddenly has? The much anticipated sequel to "Please Save My Earth"!
Side Story
In the year 20XX the vast city of New York is under constant terrorist attacks at public places. The police is clueless and the culprit is roaming the city free. The police’s only witness died, and her clones are useless, so they are left with no choice but to receive the help of Jojo Schmit of the EPIA section, a section dedicated to ESP related phenomena.
Side Story
A collection of short stories, two of which are Please Save My Earth (PSME) related, but they are standalones and spoiler free: 1. PSME - Guuzen ga Nokosumono (Things Accidentally Left Behind) 2. Kioku Senmei II 3. PSME - BIRTH 4. Cibi-01 no YaYaYa!
Other
A tribute volume for the Boku no Chikyuu wo Mamotte series, which has been running in Hana to Yume, released on the occasion of the 35th anniversary of the magazine. Contains a chapter from the original artist Saki Hiwatari and six Shorts stories somehow related to Boku no Chikyuu wo Mamotte by: -Furumiya Kazuko \-Hanamura Ui \-Fujitani Touko \-Yuwa Shiori \-Ikemi Runa \-Hirama Kaname \-Okabe Asagi \-Eiri Kaname