Description:

One day, I fell into the river and drowned.
The God of River looked at me, and said: "You're very brave, young one, so let me give you a mother as a reward. Would you like a golden-haired big-breasted elf mother with an extreme yandere personality, or a black-haired big-breasted sadistic human mother with a tsundere personality?"
Me: "I choose... your mom, dammit! What I really want is to quickly reincarnate!!"
The God of River smiled at me: "You are a honest lad indeed, so let me gift you both mothers. From now on, you will have two mothers!"
Me: "Did you even listen to what I said?!"

- Looking for someone who have a PDF file for this series.