He's jealous of his own sperm...wow, that's a whole new kind of pathetic

BOOM! CRUSHED! To think they're cousins! Ha! That's hilarious

This kind of reminds me of a certain manga, but I do not remember its name...pity

I love those gramps! Honestly, they're like school girls...it's hilarious

No words to describe this scene

I never noticed how absolutely hilarious these two are in the last three panels! How?!

When you and your best friend (lover) want to stay together but school's being a bitch about it

Interesting conclusion and while completely true, I don't think otouto-kun wanted to know that

How does one even fall like that? Let's not forget that catch of the century. Amazing reaction skill

Every Fujoshi ever.

When you think you look cute but your reflection doesn't quite show how you feel that day

...versus the face of someone who has seen reality's ugly face

No sir, please get your mind out of the gutter. He doesn't mean it like THAT. Sheesh, old men

She's just too cute. What is up with this adorable art style?!

Don't lie, you were just like them when he first spoke to you!

He's been traumatized...poor guy