Who could be the main character in 'the dragon was turned into a doll fanfic'?

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

Spiritual energy ecovery brought about fundamental changes throughout the entire world, and posed an imminent threat to it. Chen Yang died in an accident and reincarnated to become a tiny koi fish inside the fish tank in his own home. Just as Chen Yang complained about the unfairness of destiny, he awakened the Evolution System. Thus, with his sister’s feeding, Chen Yang started his insane evolution. As the whole world sank deep into apocalypse, Chen Yang descended from the skies to crush everything. He had evolved from a tiny koi fish to a gargantuan dragon. “This world shall be ruled by me!” When the fish playing in the waters was frightened by the net, it jumped over the Dragon’s Gate to become a real dragon. This is a story of how a loli raised a giant dragon, and dominated everything.

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?

Chu He transmigrated into a barren world as a lowly odd-jobber in the Xia clan. He had initially accepted his fate and was ready to spend his life ordinarily and peacefully. Little did he expect himself to suddenly awaken the Checkpoint System which rewarded him for checking into places! Ding, congratulations to the Host for successful checking-in. For your first check-in, your reward is the Golden Nine Turns. Ding, congratulations to the Host for successful checking-in. For your twenty-one-thousandth check-in, your reward is the Golden Manifestation of Buddha's Form. Chu He was certain that the world outside was too dangerous, so he resolved to not leave the book depository until he became truly invincible and peerless, and thus he stayed for a hundred years. A hundred years later, the Tiger clan attacked the Xia clan and planned to massacre countless humans, it was at that moment that Chu He finally showed his hand!

Yan Xi, a medical prodigy who obtained a doctorate at the age of 22, never expected to end up transmigrating into a novel. Her husband was the female lead's fourth brother, Gu Shen. He was a bigshot in the business world who had suffered from disability from a young age and could only move in a wheelchair. However, he was a handsome man full of schemes. Yan Xi became the cannon fodder wife of a bigshot in the business world. Her first love, Zhang Ming, had stabbed her husband's subordinate with a knife. To force Gu Shen to release Zhang Ming, she had unhesitatingly to stab herself to threaten Gu Shen. Eventually, Gu Shen released the man and gave her a large sum of money. She took this money and eloped with Zhang Ming. After that, Zhang Ming planned for a car accident that ended her life as they hit the road, which allowed Zhang Ming to conveniently take her money and run far away. When she transmigrated over, Yan Xi found out that she had just stabbed herself with a knife and was in the critical stage of deciding her future fate! Therefore, when Gu Shen threw her the divorce agreement, Yan Xi decisively refused. "Hubby, I won't divorce you." Gu Shen was surprised by her change. "Have you thought it through? I've left you some real estate and cash. It's enough for you to live comfortably for the rest of your life." Yan Xi revealed a confident smile. "I've thought it through. Zhang Ming stabbed your men with a knife. You should hand this matter over to the law. I won't interfere anymore." The surprise that Yan Xi's change brought to Gu Shen did not end there. After that, she tore off the mask of her hypocritical best friend and calmly dealt with her scheming family members. She personally treated Gu Shen's chronic illness for many years. Bit by bit, she managed to shock everyone around her who was once prejudiced against her.

Su Hanyan transmigrates into a novel set in the industrialization period. She becomes a cannon fodder side character - one with a weak personality, who is always being bullied by others and often used as an unlucky sacrificial lamb by the novel's main characters! In the novel, her 'fantastic' mother favors boys over girls. Carrying the mindset of 'sacrificing her daughter's life for the happiness of the family, she is made to give up her job for the female lead and that marks the start of her tragic life. Her family bleeds her dry, just like the female lead. She goes after the same guy as the female lead despite being abused by her husband. It can't be any worse. After recapping the entire story, Su Hanyan tears the script into shreds. There's no way she's going to be cannon fodder! She was never a coward! To deal with these heartless people, she has only one thought. She cannot let them have their way! In two words, f*ck them! Enter the young and talented surgeon, Jin Chen. His looks, capabilities, and family background are top class. He's cold and proud. Many women have tried to woo him but no one has caught his eye. This continues until one day—the usually indifferent Dr. Jin directs his warm and adoring gaze towards a young lady and says, "Anything Yanyan says goes!" Everyone is stunned. How did this random stray from the Su family get you into her hands? "Woo her!" Jin Chen smiles brightly. "I was the one who wooed her. The secret is to be shameless!"