Please recommend some novels where the main character has experienced setbacks and is not overly imaginative.

Synopsis Kuramoto Daisuke, a freshman in High School was suddenly exposed to someone vanishing in front of him. Turns out he was admitted to a Special Class full of Isekai Heroes that were regularly summoned to Otherworlds since the start of their Middle School. He was told that he was to become their Support to prevent each of the Heroes' fate of dying in the world they were summoned into. Though mediocre, he realized that his ability has a great potential but it needs a lot of hard work on his part. Unconvinced of being just the Support Character, he vowed to excavate his mediocre ability, all the while supporting the Heroes using it. And maybe more. Join my Discord Server: https://discord.gg/BWBWUrU

Bell Cranel was rejected by every familia he tried to join until he met Hestia. In a few, he was rejected quite violently. And in one particular instance, he was thrown out and bashed his head against a wall. Well, that's apparently where I come in. Not sure how and why I'm here. Not even sure who 'I' really am at this point since Bell's memories are definitely clearer than 'mine'... But I guess we're doing this. Hopefully I've got some useful cheats. Maybe?

In her previous life, Xiao Ying had grown up as the daughter of a wealthy family with a silver spoon in her mouth. She had thought that she would live out her days in peace. However, someone secretly told her that she was not the daughter of the Xiao family, and from then on, she had been living in fear—afraid that her secret would be exposed and her parents would abandon her. She was desperate not to lose her luxurious lifestyle, so she desperately tried to keep everything as it was! However, just before the moment of her death, she realized that this had all been part of the Xiao family's scheme. They were just trying to trick her out of her amulet! Their real daughter had been living a pampered life outside of the house all along! After being reborn, she returned to when she was ten years old. Her amulet had transformed into the most powerful learning system in existence, all stored within Xiao Ying's mind! She resolutely left the Xiao Family, abandoning that world of superficial hypocrisy. With a bit of manoeuvring, she was taken under a new wing! Xiao Ying: "Boss, do you need a weapon? I’ll be anything you need!" Cheng Yang: "I need to do a quality check first!" Harnessing the power of the learning system, she could execute all kinds of skills at a glance. Martial arts, dance, computing skills, and so on—everything had become a piece of cake to her! Cheng Yang was very satisfied with his new weapon! In no time at all, Xiao Ying began becoming more and more beautiful, and more and more suitors began taking note. A certain big boss could no longer remain calm. Cheng Yang wrapped his hands around Xiao Ying's slender waist. "You should've learned how to be my wife and given birth to a baby for me earlier!"

Raymond traveled to the exam room of the college entrance examination. He found he knew nothing when he had seen the examination papers. Fortunately, he activated the Grade-A Student System. However, he then found the system was somewhat weird! In the Chinese exam, the system offered him a body cultivation method? In the English exam, the system offered him Morse code? In the geography exam, the system offered him the Art of War of Global Actual Combat? In the physics exam, the system offered him the design drawing of Chengdu J-20? ... Lin Yi wanted to cry, but he had no tears to shed. In the end, he only wrote some nonsense on the examination papers. In the Chinese examination paper: “Qi and blood attack. Direct qi to flow through the meridians in your body. One day's work can last one week...” In the maths examination paper: “The weather controller can launch a meteorologic attack, such as thunderstorm, frost, in hemispheres. The calculation formula is x.=Ax...” As expected, Raymond’s total score was zero. Those weird examination papers got viral on the Internet. The whole school was talking about it on Homecoming Day. However, to his surprise, the military saw Raymond’s examination papers. On the same day, the papers were encrypted on the SSS level.

Bei Qingqing was left to fend for herself over eighteen years before the rich Bei Family finally took her back. She found that her identity as a daughter had been replaced by the 'naive and adorable' Bei Bei, who was kept in her family. Affection grows with proximity, and that certainly applied for them — there was just no comparing the affection the Bei Family had towards Bei Bei, to the affection of their biological daughter. They had spoiled Bei Bei for eighteen years. Using Bei Qingqing’s adopted mother’s illness as leverage, the Bei Family forced Bei Qingqing to substitute Bei Bei’s marriage to a comatose man, Chen Jiazhi. It seems that Bei Bei was now all that mattered to them. Even so, Bei Qingqing married Chen Jiazhi, who had been comatose for years and said to have no chance of waking up. By doing so, she earned her two-million-yuan dowry for her adopted mother's hospital bills. Though Bei Qingqing believed that she would be widowed for life, she didn't expect an accidental kiss on their first night to wake Chen Jiazhi! Everyone in the entire Chen Family — from grandparents to uncles — are now indebted to Bei Qingqing. They all spoiled her, especially her now-awake husband Chen Jiazhi. Naturally, the Chen Family also took care of her adopted mother by providing her with better treatment! Bei Bei was left red-eyed in fury! She was supposed to be Chen Jiazhi's fiancee. His enormous wealth and affection were rightfully hers! Moreover, Bei Qingqing had health problems and couldn't get pregnant. Bei Bei will do her best and scheme to replace Bei Qingqing! Unexpectedly, however, Bei Qingqing was having morning sickness just two months after marrying despite rumors of her infertility! As for the Bei family that abandoned her? They were declining at a visible rate, and soon wouldn't even deserve to lick Bei Qingqing's shoes!

When she awoke, she had somehow become the mother of the three villains in the novel, and a vicious supporting character at that! Her husband was so angry that he left overnight without even bothering to put on his shoes. The three little brats became as mischievious as monkeys! The aloof, arrogant system told her that if she wanted to return, she had to be a good person and instruct the villains properly. Just as she was rolling up her sleeves to teacher her three little brats a lesson, her husband returned with great wealth! He even hugged her legs and refused to let go. What was he trying to do? *** The children's father said, “Your mother's health is delicate but she's good-tempered. Don't bully her.” The mischievious little brats, who had been punished by being made to stand upside down, "Dad, open your eyes wide and look. Who's bullying who?" The children's father added, “My wife is honest and never causes trouble. All of you should give in to her.” The individuals who had been beaten up until they were black and blue, "Who should give into who now?" "My wife is virtuous and obedient. If I tell her to go east, she won't dare to go to the west!" The children's father brought over a basin of warm water. “My wife, the water for washing your feet is ready. Let me massage your feet!“