cant remember

#1
Mc is blind gets summoned by goddess but was sent back in time by the goddess for not being "perfect" and was about to die from the mana when the goddesses sister or brother and is able to use spiritual energy (i think). He survives for a bit getting stronger and stronger and meets a slime who soon becomes his maid/lover. He saves a Uchiha siblings and they both give him one of their eyes when they perform surgery for eternal mangekyo Sharingan. 

that all i remember