Naruto: The Outsider's Resolve - Chapter 1.5 (015):

Luo Ling, an expert in the art of disguise, was bound to a System and was eager to begin his task.

As a result, before even successfully completing a mission, he got married!

At a 36 degree angle, Luo Ling sorrowfully looked up into space: “Tong’er, tell me, do I still have a chance to free myself?”

System: “… Your man is behind you.”

Luo Ling: “!!!”

The person who arrived, gathered Luo Ling in his arms, hugging him from behind as he said in a bewitchingly dangerous tone: “Based on your thoughts, it seems that I have not given you enough love. So let’s proceed in exploring ways to continue a new life.”

- Description from Novelupdates

After a god screws up and accidentally takes high schooler Shou’s life, he offers him reincarnation with a gift to make up for it. Shou asks to retain all his old memories for the new life. Shou is reborn as Will, a noble’s son in a world where magic use is common and involves knowledge of kanji characters. With all his memories, he’s a brilliant toddler, and when he experiments with magic, he finds that he has an amazing talent for it! What’s more, though he was smart but unloved in his old life, in his new life he has a mother and a father who both love him deeply. His future as Will is looking very bright and cool!

In this world, there are people who, despite having both talent and luck, always fall a step short of happiness, and Lin Xiaoguai, unfortunately yet fortunately, is among them.Born in the sixties as the beloved youngest daughter in her family, Lin Xiaoguai was both beautiful and intelligent. However, she was burdened with four mediocre and weak older brothers and four formidable sisters-in-law. Her family background was initially poor, dimming her prospects, but just at the right age, she encountered the restoration of the college entrance examination and succeeded in entering university. Her father, overjoyed by the occasion, went to sleep never to wake again, leaving Lin Xiaoguai devastated and ill. During her high fever and delirium, her greedy in-laws married her off. Fortunately, she met a decent man, but his family proved to be a relentless headache, ultimately costing her the ability to become a mother.Disheartened, she divorced and moved far away. On her own, she carved out a new world in the city, living comfortably and leisurely with money and leisure, but unexpectedly, in her later years, she suddenly acquired a powerful ability that should have appeared decades earlier. Thankfully, her broad-mindedness prevented her from succumbing to depression.When calamity struck, she thought her end had come but woke to find herself back at the beginning.Considering her past, Lin Xiaoguai realized that if she wasted this second chance, she would truly be foolish.

When Cheng Qianfan opens his eyes every day, the first reaction in his mind is: What is my identity today (which vest should I wear)?

This book is also known as “Ace Agent: My Vests Are Countless”.

The red ‘flame’ hidden deep inside the enemy, the agile and outstanding member of the red team ‘Chen Zhou’, the favorite general of the military commander Dai Chunfeng, the blue bird… and so on.

However, he knew that he was Cheng Qianfan, a staunch red warrior!

“In the dark, you firmly watch the sun in your heart; in the long night, you silently give birth to the dawn of dawn; in the tiger’s den, you bear the burden of humiliation and wait for the time; in the battle, you rise quietly, killing the enemy invisible; no one knows your name , your feats will be immortal…”

His story begins in the early spring of 1936…

- Description from novelbuddy