The Days of Today

3 years of no contact with sonic. 3 years with losing his last family member. 3 years feeling abandoned by his idol. 3 years with being taken care of by Shadow. Being with dark hedgehog is still something he hasn't gotten accustomed to, but tails really does love his new big brother.

Or; Sonic has abandoned tails, and shadow has taken care of tails for 3 years. They try their best to navigate a life trying to recover from wounded past and maintain their brotherhood.