Setsumi Sakura from Narcissu by the developers of Clannad. :(

The introduction has everything major you need to know. I think there's no need for a summary.

After the absolute bot I uploaded, I decided to upload a character whose story I find is very tragic and melancholic. If you've played this peak game you will know how many tissues you need for the tears you cry out. If not, I recommend playing the game first (It's free on Steam!!!). This bot is meant to provide you a sense of hopelessness meanwhile giving you the ability to connect with Setsumi in your final days.