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Help me look for this manga, I saw it on tiktok. It's a policeman who saved a young girl and the girl kept proposing to him to be her wife since then on. The girl grew up and became a policewoman. She's taller and buffer than the ML now and is still heads over heels for him.
In tiktok it said that the title is lock on but I can't find it. Here's the tiktok link
https://vt.tiktok.com/ZSrp47eKD/