There's something even stronger than blood but that's my thought.
[He already proved that if anyone hurt his family, he would go after them. Just like when he almost shoved Namatame into the TV for what he did to Nanako and the others because he thought he was saving them. But then his friends...who were just like family. He laughed with them, cried with them, stood against Death herself with them. The phrase 'blood is thicker than water' didn't apply there.
A bond stronger than blood. Yu just didn't know how to describe it.]
[Voice]
[He already proved that if anyone hurt his family, he would go after them. Just like when he almost shoved Namatame into the TV for what he did to Nanako and the others because he thought he was saving them. But then his friends...who were just like family. He laughed with them, cried with them, stood against Death herself with them. The phrase 'blood is thicker than water' didn't apply there.
A bond stronger than blood. Yu just didn't know how to describe it.]