Let’s talk about Matsuno Choromatsu for a moment—he’s one of the six main characters in the wildly popular Japanese comedy anime series Mr. Osomatsu, also known as Osomatsu-san. Among the sextuplets, Matsuno Choromatsu stands out as one of the middle triplet brothers, often recognized for being the most intellectual and reserved of the bunch. You’ll usually spot him wearing glasses and that iconic blue hoodie, which has kind of become his trademark look.

Now, Matsuno Choromatsu is actually the second-born of the triplets, and he really embodies that calm, level-headed energy that balances out his more chaotic siblings. He’s smart, analytical, and tends to think things through before acting—unlike some of his brothers who dive headfirst into nonsense without a second thought. Because of this, Matsuno Choromatsu often finds himself playing the role of mediator when tensions flare up between the others. He takes his studies seriously, too, prioritizing academics over just about everything else, which says a lot considering how absurd their daily lives tend to get.

But here’s the thing—even though Matsuno Choromatsu comes across as mature and responsible, he’s not completely immune to silliness. Every now and then, he gets pulled into his brothers’ wild antics, and honestly? It’s kind of refreshing to see that side of him. One of the more interesting quirks about Matsuno Choromatsu is his deep love for idol culture. Yeah, you heard that right—he’s totally into fandom activities, following idols, and getting caught up in pop culture trends. It’s a bit of a contrast to his otherwise conservative and structured personality, and that clash? That’s where a lot of the humor comes from. It makes Matsuno Choromatsu feel more human, you know?

All in all, Matsuno Choromatsu is a fan-favorite character in Mr. Osomatsu, and it’s easy to see why. His mix of intelligence and occasional goofiness makes him both relatable and entertaining. Whether he’s trying to keep the peace or secretly obsessing over his favorite idol group, Matsuno Choromatsu brings a unique dynamic to the show that appeals to fans of all ages.

When we dig a little deeper into his personality, it’s pretty clear that Matsuno Choromatsu fits the ISTJ profile in the MBTI system—Introverted, Sensing, Thinking, Judging. He’s logical, detail-oriented, and thrives in structured environments. Matsuno Choromatsu prefers routines and plans, and he definitely doesn’t enjoy surprises or last-minute changes. His introverted nature means he’s more reserved in conversations, often choosing his words carefully rather than speaking impulsively.

Matsuno Choromatsu’s sense of duty is strong—he’s reliable, responsible, and always tries to do the right thing. But that same trait can make him come off as a bit rigid or uptight at times. He likes order, dislikes chaos, and isn’t particularly fond of stepping outside his comfort zone. Trying something new? Only if it follows a clear set of rules. Jumping into something spontaneous? Not really his style.

In social settings, Matsuno Choromatsu tends to stay on the sidelines. He’s not the type to dominate a conversation or wear his emotions on his sleeve. Instead, he observes, analyzes, and responds with logic rather than emotion. While that makes him dependable, it can also make him seem distant or overly serious to others.

Looking at things from an Enneagram perspective, Matsuno Choromatsu lines up closely with Type One—the Reformer. This type is all about integrity, improvement, and high personal standards, which fits Matsuno Choromatsu perfectly. He values discipline, structure, and doing things the “right” way. He holds himself—and sometimes others—to incredibly high expectations, and when those aren’t met, he can be quite critical.

Matsuno Choromatsu is driven by a desire to improve both himself and his surroundings, but that noble goal can sometimes tip into perfectionism. He struggles with rigidity and can be overly hard on himself when things don’t go according to plan. Still, that inner drive is part of what makes him so admirable.

To sum it up, Matsuno Choromatsu is a complex and well-rounded character whose blend of intellect, responsibility, and hidden quirks makes him stand out in the Mr. Osomatsu series. Whether viewed through the lens of MBTI or Enneagram, Matsuno Choromatsu consistently shows traits of someone who values order, logic, and self-improvement—while still finding moments to let loose and enjoy life in his own quiet way.