LUO YAN felt very proud after he said that. It's like a perfect sales pitch. Not that he's saying that he's selling his brother. He's just doing his job to promote his goodness to the person that may or may not hinder his relationship with the girl he liked. If Luo Ren heard what he just said, he would definitely be thankful for his quick wit.
It was only after a few seconds that he realized that the way he worded his 'sales pitch' was a bit cringey. Using the words 'pure' and 'single' in the same sentence, didn't he just practically announced that Luo Ren was a virgin?
Luo Yan panicked for a bit. Then, he thought, what's wrong with being a virgin? That couldn't be considered a flaw on someone. Besides, his brother was only 22 turning 23. At least he still had seven years before he could be called a 'wizard'.
Mini-theater:
Ah Ren looking at his father: Dad, didn't you ask me if I prepared a special gift for Jiao Jiao? And yet, here you are, gifting her college entrance examination practice books???
Daddy Luo looked at his son as if he's crazy: Am I the one trying to be her boyfriend? Of course, I would give her something useful. Just like an adult should.