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It's not really suited for a yearbook quote, but I like this one from Stigmata:
I promised you, didn't I? I promised that I would recognize you regardless of what form you took, whenever and wherever you were.
https://www.mangago.zone/read-manga/stigmata_1/uu/br_chapter-215757/pg-13/
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Sorry this is a troll comment which doesn't answer the question but I just had to
"I resented you so. I had to keep moving forward in every moment... But you were always my one and only weakness. That's why I resented you so. Luka, live with love. Embrace the pain, the frailty and the moments so unbearably shameful. Forgive yourself… Again and again, endlessly. Because everything… begins from there.”
Iykyk ╥﹏╥
What are your favorite quotes from your favorite manga/manhwa? I want to include your quotes on my graduation yearbook lol