Responses
Yes, they are "legally" brothers after their parents got married but since they are not biological brothers, it's not considered incest. It only covers blood relations Siblings/parent/cousins. Think of it this way, if their parents divorced or annulled, they would be back to complete strangers, there's no blood tying them together.
I LOVE INCEST-(well it's technically not but i mean brother related) STORIESS LIKE THIS ESPECIALLY SO CUTE AND LUCKKYUY, OMG I DIDNT REALISE THIS WAS ANOTHER VOLUME ANF THIUGHT I WAS REREADING THE OLD ONE