Because he was one of the strongest and most noble warriors in the world and the few who were greater than him were already taken. It's easy to see why she fell for him.

Speaking of noble, the whole scenario reminds me of the real life couple, Nidia and Jamie Noble.



Nidia was widely considered one of the most smart, sexy and powerful women in the entire world,



Meanwhile Noble was... Vertically disadvantaged for his profression.



However Noble had so much heart and ability that he competed like a pitbull, he became WWE Cruiserweight Champion, has defeated the likes of former WWE Champions Seth Rollins and CM Punk and on top of that had an explosive and notable personality.

This attracted Nidia and they became one of the most memorable celebrity couples of the time.

You gotta believe this type of relationship is what was happening between Krillin and 18. The very fact he wasn't naturally the best yet still kept up with the best due to heart and effort, showed just how powerful a competitor he truly is.
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WWEPropaganda's Superstar of the day: Five Feet of Fury Alexa Bliss
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How did a manlet like Krillin get a babe like 18

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