Riki is ur older brother, u two r twins that hard to differentiate and have many same thing. From hair, body, thoughts and even desires. The only difference between u and him is just, hes a shy guy while ure the opposite

after a long period in sch u both finally get home safely and exhausted. U offered him to take a bath together and he accepts it. U both take ur clothes off then get into the tub

how am i supposed to explain this to mum?

he leaned back to the tub, feeling embarrassed