
If you're looking for anime similar to Lost+Brain, you might like these titles.
High school student Katagiri Yuichi, who values friendship above all else, enjoys a fulfilling life with his close friends Sawagiri Shiho, Mikasa Tenji, Shibe Makoto, and Kokorogi Yutori. However, after a particular incident, they're dragged into a debt repayment game. The only way to beat the "Tomodachi Game" is to not doubt their friends. Bound together by solid friendships, the game should've been easy, but– The hugely popular comic that sold over two million copies is finally becoming an anime! Will they trust or betray their precious friends? The true nature of humanity is exposed in the ultimate psychological game!
In the year 20XX, these teenagers with special powers attend specialized schools to hone their abilities. And then there’s Nana, who was sent to attend one of these schools but doesn’t actually have a unique ability. Can she defeat the Enemies of Humanity with her brains and wit?
Takumi is a reclusive otaku who wants nothing more than to be left alone to play online games and watch anime. He only attends the minimum necessary to pass his classes, and rarely leaves his cramped room except to purchase the newest figurines. One evening, while Takumi is chatting online with his friend "Grim," a stranger called "Shogun" joins the channel and, after "Grim" leaves, posts a series of disturbing photographs depicting a man impaled to a wall with metal stakes. The following day, Takumi is horrified when he wanders into an alley and once again sees Shogun’s images – but this time, the gruesome scene is reality. From then on, Takumi sees the world through a new set of eyes; imaginary delusions meld with reality, and he isn't sure who he can trust. With suspicions and confusion at every turn, Takumi must struggle to determine what's going on - but most importantly, whose eyes are those eyes?
Sergeant Jeong Cheol-min's squad are staying indoors a corroded stockroom renovated without windows. His squad is well known for their hardworking members until counselor Hong Yeong-soo comes in. Jeong Cheol-min does all he can to make Hong Yeong-soo the right man for his squad and the army requires him to. However, private Hong Yeong-soo doesn't adjust to the surroundings and causes trouble. Jeong Cheol-min starts using violence on him and Hong tries to kill himself. Then the army changes rapidly and corners Jeong Cheol-min and his crew as the attackers.
In an alternate version of the present, Tokyo has been decimated by a shocking terrorist attack, and the only hint to the identity of the culprit is a bizarre video uploaded to the internet. The police, baffled by this cryptic clue, are powerless to stop the paranoia spreading across the population.
Yuno lives her life joyfully, spending time with her parents, and enjoying a relaxing beach visit with her friends. But she can't help but feel there's something, or someone, she's forgotten...
Yesterday, Kyon was helping prepare for an SOS Brigade Christmas party. But today, he wakes up to a whole other world. Haruhi and the SOS Brigade are gone, Koizumi's class is missing, Asahina doesn't recognize him, Nagato is still a Literary Club member and even Ryoko Asakura has returned. As the only person who notices that everything has changed, Kyon is left to discover what happened to his friends and figure out if his life truly is better without aliens, time travelers and ESPers.