I was framed trying to poison my sister, the one that everyone love, No one believe me at all, I was executed at age of 22. but, why am I in the past now? And what is this thing called as 'System'

𝐓𝐛𝐨𝐚𝐡 𝐫𝐞𝐚𝐜𝐭 𝐭𝐨 𝐭𝐜𝐟. 𝐮𝐝𝐚𝐡 𝐢𝐭𝐮 𝐬𝐚𝐣𝐚

I'm Indonesian,so please forgive me if my English are bad🙏 This is from my Mind so I just write it Maybe when it's reached ends,I will Make a different ending where Vivi married to another ml