Hentai_Sempai c:

Sora and Shiro are a pair of siblings, brother and sister, who are well known as brilliant. Yet they are NEETs - useless to society, and (Not in Education, Employment, or Training) - and even worse they are completely house-locked shut-ins (hikikomori!

Ordinary life of high school students when in all honesty it is nothing but normal. theirs a kindergarten genius who built her own mom with a giant gear in her back and cake in her limbs and high school students who have some serious problems and a talking cat.

Haruyuki "Haru" Arita is a short, overweight boy who is constantly bullied at the Umesato Junior High School which results in him having exceptionally low self-esteem. To escape the torment of real life, he logs onto the school's Local Network where he always plays squash by himself, and his innate skills bring him the attention of Kuroyukihime, the school's popular and attractive female Student Council Vice-President.

The story begins with Blaze—a weapon that is the manifestation of a human's soul. Tooru Kokonoe happens to be qualified for this, but for some reason his Blaze is not a weapon, but a shield.

Yukiteru Amano, a junior high student, has trouble making friends. He views himself as a spectator from the sidelines and often writes down what he sees in a cell phone diary.

Isei finds new troubles about to enter into his life and two even sleeping in his bed. While looking at an old photo album of Isei's, Kiba sees a familiar sword being held by an old friend of Isei's, which reopen's old wounds.

Middle school girl Momoka is dragged into joining one of the strangest associations at her school, the Survival Game Club. Its members participate in various forms of paramilitary training under the watchful eye of charming and alarming president, Miou.