Traduction I came up with. My Japanese is crummy so this is the best I could do.
“Oh!<3”
“Hey Riolu!”
“Let’s play together !”
“Oh OK!
As soon as I’m done eating lunch I’ll go”
“Gah! He… hey ! Big bro ? My… my friends have come over so can you pull out quickly ?”
“Awww, well I just came but… I only did it twenty times”
“Well… after I come home, I’ll be your urinal how does that sound ?”
“Well if it can’t be helped then…”
Last one ! *slam* 21!”
“I just came again !”
“Your insides are so used to it.”
“Gah! “
“Your meat”
“Now, I just need to pull out one last time…”
“… Is what I would say if I wasn’t messing with you. 22! Eat your big bro’s dick ! *slam*”
“Gyaaa ! I hate this bwaaaa”
—-
“Ah… sorry sorry i was a bit slow.”
“I… I just ate too much again hahaha !”
“Ah you came! Come let’s go!”
“You over ate again? Your stomach is bulging !”