Responses
You're right Nara did feed him poison but after awhile when Tasara started showing the effects of it (coughing) he started taking it himself.
And apparently he had to use it cause his younger sister was sick and he needed his uncles help, who was the one that told Nara to poison Tasara if he wanted the help.
I binge read it all in two days lool

Nara have you ever considered idk telling him you drank the poison instead of giving it to him I mean