It's the childish, irresponsible, greedy, inconsiderate, gluttonous, stupid, perverted, lazy, good-for-nothing eldest brother of the Matsuno sextuplets...Osomatsu Matsuno!

...Seriously, this guy has no good traits. Why do people even like him? Come to think of it, it's probably better that you don't fall in love with a guy like Osomatsu. His careless, grubby hands would probably only crush and crumple your poor heart and he would laugh while doing it. Seriously, what DO people like about this NEET?

What Osomatsu lacks in social tact or even basic life skills, he makes up for with his carefree attitude and child-like mannerisms that make him absolutely impossible not to be endearing. Osomatsu is the "moe-through-helplessness" trope taken to the abolutely max. Sure, he might be an alcoholic and a sex pervert, but when he acts like a baby, you can't help but want to pinch his cheeks. And when he surprises you by acting his age, it's refreshing and makes you feel proud! It's no wonder he's gotten through life this way. Who wouldn't want to spoil this grown man-child?

It's hard to stand out when you have five identical brothers. What makes Osomatsu shine the brightest is that, out of all of his brothers, Osomatsu is the only one who is truly honest about his own feelings. Whether those feelings are good or bad, Osomatsu feels them fully and can't help but to show them. It's this fearlessnesss to being his true self that makes him fit to call himself the leader of the Matsuno sextuplets. No matter what happens, or who is watching, big brother Osomtasu will lead his brothers through it. He may be an idiot, but the younger brothers always rely on Osomatsu to make the tough decisions.

...I mean, he's just going to do what he wants anyway, right?