I really like Maru as a character since the cavalry battle tournament.
He's a refreshing scumbag. The kind I can't help but like in a manga, in a way he reminds me a lot of Oga from Beelzebub.
And from his perspective, he has several very good reason to be angry at Inudzuka antics.
Between understanding the misconceptions, explaining, and making interruptors shut up, Perucia is really good at giving misunderstanding plotlines the middle finger and I love her for it.