What… how did this not explain anything. The summary was intriguing but the first chapter is a mess. It talks about the death of the MC sister and some plot around it but it doesn't presenting in a way that makes the situation feel coherent. We are left to make some cliche assumptions.
That said, I like the art. I always like it when the characters take time to recover from the situation. A lot of stories just have the character thrown into a weird situation and them adapting super quickly.