"It's stuck deep inside me and I can't get it out of my head. Mafuyu's voice is an insane and dangerous weapon."
That day, Ritsuka Uenoyama started to feel that playing the guitar and playing basketball, both of which he liked very much, were becoming boring. He then encounters Mafuyu Sato, who's holding onto a broken guitar, and decides to fix it. The moment Uenoyama finishes fixing the guitar, Mafuyu becomes completely attached to him. However, after hearing Mafuyu sing it leaves a deep impression on him.
"Hanako-san, Hanako-san...are you there?"
At Kamome Academy, rumors abound about the school's Seven Mysteries, one of which is Hanako-san. Said to occupy the third stall of the third floor girls' bathroom in the old school building, Hanako-san grants any wish when summoned. Yashiro Nene, an occult-loving high school girl who dreams of romance, ventures into this haunted bathroom...but the Hanako-san she meets there is nothing like she imagined! Kamome Academy's Hanako-san...is a boy!
(Source: Yen Press)
The year is 2061, when space travel is now possible and commercially viable, and the students of Caird High School embark on their Planet Camp.
But soon after Group B5 arrived at their planetary camp site, a mysterious and unforeseen sentient light sphere warps its 9 members into outer space, stranding them 5012 light years away from their home planet.
With the discovery of an old, unmanned spaceship nearby, the students must stay strong, manage their limited resources and remain united in the darkness of space, so that all of them can survive their long and likely perilous trek back home aboard the Astra.