This story begins with our protagonist waking up in what I remember as a forest after being reincarnated by a god. However, this man seems to have amnesia for parts of his past life. I believe he died from old age.
After he gets reincarnated, he finds he has several skills one of which is an item storage. In this item storage he has a couple items the only one I can remember would be a wooden sword. It seems this guy's sword skills is almost maxed if not already maxed because of his previous life achievements he also is very proficient is several other skills I think like CQC. The reason this wooden sword is overpowered is because it is unbreakable which was granted by the god.
Later in the manga the god sends an angel to retrieve this wooden sword from him because of it being too powerful for the world he is in. The angel disguises herself as a merchant and not knowing the wooden sword is super powerful trades his wooden sword for a real sword which I believe is a katana. However, once the angel gets back to heaven and tells the god that she has finally gotten this broken item back she finds out that the god transferred the power from the wooden sword to the one he just bought.
That is all I remember about the story. I read this novel online a couple months to a year ago.