I hope what someone can help me to find this story.
MC have power to mind control, but his power is weak, also he have 2 sister and mother. He's older sister is a bitch what like to punish him and his yonger sisteris a pretty one hwo heals him every time. This world have strange power sistem and to grow they power they should study and get an item (something like certificate). And MC find his mother item and used it.
Sorry for my bad English.
