Isamu and Senzai throughout the years

"Blood is thicker than water, but the sea has broken that bond. The tragic tale of two brothers." It says,

A tragic story of two siblings who are victims of abuse, unknowingly continuing the same cycle their parents inflicted on them who were raised by neglectful parents who failed to guide or protect them, the brothers struggle through overcoming painful situations. As the story continues, the question remains... will they survive together, or will one of them be lost forever?

➡ The art thumbnail credits goes to: Noobdadae