Next day, morning time!
"Based on what I've been through so far, rain seems to be a system of truth and memory that travels between this world and the one from my past life. Systems are a loop, they don't have an ending cause they always repeat themselves to reach the same objective, that probably means the rain my old world has cannot be changed and manipulated by people from it cause the system says the rain should only be weather, the impact rain has in that world is based on a cycle of nature where rain can make life grow like plants. From the moment i woke up here, i could not get affected by nature. I can feel the grass, i can feel the rain on my body but i can't get soaked by the rain or smell the grassfields.
No one also reacted weird about this, so i can deduce it's part from their experience or their culture, which means since people were born in this world it's natural for them that grass doesn't have any smell and rain is only a drink, for them the only way to get soaked is from the sea water and the water they build to have shower.
Hmmm... maybe that killer and the old lady, together with the people that killed me could find a way to travel from this world to the other one and bring their powers to the other side. I can assume that only people with magic and experience can do such a thing, rain is realy incredible and scaring.