Nagi Amano - 天野凪
(Sempai)
About
He is [Hina](https://anilist.co/character/139710)'s younger brother who is an elementary student. Despite being young, he is popular with the girls due to his "mature behavior". (Source: Tenki no Ko Wikia, edited)
(Sempai)
He is [Hina](https://anilist.co/character/139710)'s younger brother who is an elementary student. Despite being young, he is popular with the girls due to his "mature behavior". (Source: Tenki no Ko Wikia, edited)