If you're looking for manga similar to Kagerou Daze: In a Day's, you might like these titles.
'Welcome, to the Human Zoo' When an ordinary high school student Ichii Hana woke up, she was in a cage with her classmates. And there she was entered into a death game involving use of her mobile phone!! Along with a classmate with the same name, yet complete opposite in personality, Inusawa Hana, she challenges the game!?' I'll definitely stay alive. By throwing away this stale body'
The world we love is going to vanish. "You and me, we're one in the same." In front of Ainozomi Nakagusuku, a transfer student bearing a striking resemblance to herself suddenly appeared. When the girl mentions the whereabouts of Ainozomi's recently missing ex-boyfriend, inexplicable events threaten to change her life. Occult circles, doppelgangers, and mysterious disappearances.
What would you give up for a chance at eternal life? Money? Friendship? Memories? Most people would consider it, if not actually go through with it. After all, immortality gives you an endless amount of possibilities… And yet this story tells a tale of a boy who considers to give up his immortality for just one thing - the friendship of a stranger…
Miku has always dreamed of being an actress–but just when she has a shot at making her dream a reality, her life takes an unreal twist. She’s hurled into the “world of the play,” a strange mansion where she meets seven mysterious, and potentially dangerous, characters. They all have their own secrets, but there’s one thing Miku knows for sure: if she doesn’t find the page that was stolen from the script, she’ll be trapped in the false world forever!
As the high school is busy with preparations for the Culture Festival, a female student is found on the roof, collapsed and bleeding.Written in blood is a single “X.” Is this an accident? Or a case? Hibari sets out to uncover the truth.
Miku has loved singing since she was little. She earned a magnificent victory in her audition and stepped into the world of idols. Finally, she became a top idol, but the office she belongs to has forbidden any kind of romance. Soon, Miku starts to wish that she could fall in love like a normal girl. Then, one day, she meets a mysterious boy named Len in a dream...