Ano Ko no Kodomo (2024)

Despite the main plot difference, Umi no hajimari's first 2 episodes (I love ep 2 btw) reminded me of the plot of Ano Ko no Kodomo since both are about having the same troubles of unexpected pregnancy.

The drama concerns 14-year-old Miki Ichinose, who becomes pregnant with her boyfriend's child. After struggling with the fact that she is pregnant, she decides that she will keep the baby and raise it by herself. The show follows what this means for her, her family, her school life, the life of her boyfriend and his family, and the society in which she resides.