[Brother Wars] Adopted Son

Ryukyu, who was adopted by Asahina's family when he was two years old, couldn't really integrate into that big family until he entered high school. The so-called bond between brothers did not exist in him as an "adopted son".Moreover, as an alien who can understand the language of beasts, he is also different from others in essence.Until one day, he was inexplicably bound to the "happiness system"... Tips for entering the pit: ① Lord Liusheng, the story begins when he is 16 years old, and the middle and later stages are followed by the plot of the anime. ②This article has nothing to do with novels, comics, or games. ③Pseudo-brothers, with system settings, have a plot to have children, and the thunder will stop. ④The writing style is limited, the plot is fluffy, try to keep the character's personality fresh, and it is not ruled out that the plot needs to be OCC.Content tags: Girls' Proud Son System ┃ Search keywords: Protagonist: Ryukyu Asahina ┃ Supporting roles: Asahina's other brothers