Responses
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The easiest answer would be that they are dead. In Japan, when you become orphan, the family members adopt you. But if they don't like you, you will be going from relatives to relative without settling.
My guess is that he ran away from the latest relative he was living with, and is living of his parent's heritage. It would explain why he doesn't know how to love alone or decorate his house, because he never had his own space
I love my baby sakura. Anyways, can we please know more about Sakura and Suo? Like the only thing we know about Sakura is that he had a rough past and had bad friends and now he lives alone... Can we get more context as to why his parents don't live with him or what exactly happened. Also we know nothing about Suo like absolutely nothing. I hope we get to know more about them in the future cause it's been 171 chapters already