If you're looking for manga similar to What the Skylark Says..., you might like these titles.
"Human beings must be happy no matter what." A society where emotions are controlled by a chip, and hackers that can hack the chips to make the people hallucinate. The survival of Ah-Yeon, a white hacker who suffers from depression in a world where negative emotions are forbidden.
The stage of this work is the world where humans began commercializing clones after the nuclear war, where the population decreased sharply. Although clones boast physical abilities far beyond humans, there was a rule that they could not assume the same position as humans.
‘Remember’. 'One, two, three, four, five, six, seven' ‘I must remember until the end… until the end…’ The day when my wife Julia was killed by those scoundrels, my entire life was consumed by seething anger. That's right. I must eliminate those scoundrels. 'The day I exact my revenge, bury me beside her.' Until then, I must endure and wager my life on this battle for survival.
A girl at my new school asked me out. She's the school's strongest, Yi-Na Kim. Is this an elaborate scheme to punish me? "Can the next challenger wait until tomorrow?" Only the strongest girl can take me! Wait, do I not have a say in this?
Sarang was never supposed to survive her incurable disease. In the callous and sadistic world that loves to take pity, she is adored and yet despised by everyone. She is tired of all the attention and wants nothing to do with anyone -- at least not until she meets Eunjo. Could the two girls who seem so different become friends? Can they right the wrong committed by their parents and finally find peace?
Mazda Hun is a soldier caught in a web of political and military struggles beyond his comprehension. Captured by the government, they sentence him to Lethe. Society doesn't believe in the death penalty anymore. They've modernized the paradigm of punishment. Lethe has many names: mercy, treatment, repair, reformation and rehabilitation. Some even call it justice. The Lethe procedure inflicts no pain and is over quickly, but its victims consider it a fate worse than death. Lethe is the execution of a person's soul. They make room for a new personality that will remember nothing of the old. Those who undergo the process don't seem quite human ever again. And Mazda Hun's time is running out fast.
The Priyeddie bamboo forest, built to be used anonymously to exchange true feelings. It has been running smoothly as the basis for gossip for three years. But after an MT visit, a sniper fire bombs and a strange rumor began to circulate in the school.