Choromatsu Matsuno is one of the sextuplet brothers in the comedic anime series 'Osomatsu-san'. He is known for being the most responsible and mature among his siblings, often acting as the voice of reason. Despite this, Choromatsu is also prone to bouts of anxiety and is easily flustered, especially when it comes to his idol obsession. Throughout the series, he often finds himself caught between trying to be the adult in the group and indulging in the same antics as his brothers, adding depth and humor to his character.