Tsunayoshi Sawada.

He was Kyoko's older brother. Therefore, he had to respect him. That's how Tsuna started off thinking about him, and it seemed Ryohei was content with this relationship. It was much later, in the middle of Ryohei's fight with Lussuria, did Tsuna realize how much of Ryohei's character did he miss. And that never left his mind after he realized.

Ryohei is an airhead. This is undoubtedly true, as he plows his way on first instinct. However, Ryohei is no idiot. He, because of his reliance on his reflexes and instincts, is the most protective of them all. He doesn't fail to see when one of their members is feeling down, or when any of them have thoughts too heavy to bear on their minds. He sees everything that bothers them, and goes beyond blood to protect his brothers and sisters.

To Tsuna, Sasagawa Ryohei is the caregiver, always the one watching, for whenever one of them falls. When that time comes, it would definitely be Ryohei to catch them first.

Hayato Gokudera.

Hayato had an awful (or, not so awful) habit of forgetting about lawn-head. He doesn't know why, but it happens. He doesn't get why for years being with them, that he still forgets that the Vongola had a Sun guardian. Shouldn't the Sun be the flashiest, the brightest, the one who shines and glows and screams I'm here? So why doesn't Ryohei?

Hayato finally reaches conclusion to this dilemma when he sees Ryohei comforting the stupid cow. He sees Ryohei's gentleness, sees the way he picks Lambo up, holding him in his arms and cooing him to sleep. Then Hayato is wondering; how could he not have known? Ryohei is often forgotten because Hayato doesn't let anyone comfort him. Hayato doesn't see that Ryohei's role as the Sun guardian isn't to shine as bright as he could, but to warm the hearts of the people in need of it.

To Hayato, Sasagawa Ryohei is the warmth of the family; the warmth that keeps them from losing themselves in the frozen cold of the mafia darkness.

Kyoya Hibari.

The herbivore was annoyingly persistent. He would never stop when he needed something, was really rather blunt about it, and was a nuisance in Kyoya's life. He hated being in the presence of others, and hated the way the herbivore kept telling him to interact with the family; you're a part of it to the extreme, so hurry up and talk to me and them already. Kyoya swears he's going to lose his mind.

However, this is why Kyoya doesn't bite the boxer to death. That's because Ryohei is, despite being annoying, still a man Kyoya's acknowledged. Deep down, Kyoya knows that Ryohei is the epitome of honesty, and never lies in his actions. Honesty was one of the few things Kyoya values, and so he acknowledges Ryohei.

To Kyoya, therefore, Sasagawa Ryohei is honesty itself, in all of its persistence and straightforwardness.

Chrome Dokuro.

Chrome is a little intimidated by Ryohei's presence. This is because in her eyes, he is too watchful, too protective, and too warm. She's not used to any of it, and it scares her. She doesn't know what to do whenever he tells her to rely on him to be her older brother. She doesn't know and is afraid to make any more ties to people than she already has.

But when Ryohei happily hugs her along with Kyoko and Haru, ten years in the future, and says loudly, that he'll definitely protect his beloved little sisters to the extreme, she knows that she shouldn't be scared, that making one more connection would be okay.

To Chrome, Ryohei is nothing but the wonderful older brother that dotes on his family.

Mukuro Rokudo.

In all honestly, Mukuro was ineptly curious about Ryohei. Ryohei is one of few that seemed to be completely unafraid of him, completely unwary of him, that it made him interesting. Mukuro is interested, and quickly finds out why.

He finds that Ryohei is nothing short of an airhead, and also finds out that what made him accept Mukuro was the reason to him being an airhead. Ryohei is optimistic, easygoing, and that is what makes him see Mukuro as human.

To Mukuro, Sasagawa Ryohei is the optimism, the bright sunlight through a crack in a deep, dark cave of the underground world.

Lambo.

Lambo loves Ryohei. He doesn't tell anyone, but he loves him. In the Bovino family, it was strict and loveless. So when Ryohei plays games with him, regardless of how embarrassing it is, Lambo is awestruck. He's never felt love, but he's sure that what he's feeling is the love of an older brother.

Lambo loves Ryohei, and that's what makes him run straight to his arms whenever Lambo sees his face. Lambo knows that Ryohei isn't his only brother, but Lambo knows that he relies on Ryohei the most, and likes being with him the most.

To Lambo, Ryohei is reliable, and would do anything he could to make his younger siblings happy and safe.

Kyoko Sasagawa.

Kyoko always thought of her older brother as more than just a brother. Yes, he was stubborn, and much too overprotective, but Ryohei is still the one that comes running to her first whenever she cries. She knows that he isn't being stubborn for no reason. She knows that he's hiding the truth to all of his fights strictly because of her. She knows, and it hurts. She loves him as much as he does her and it hurts when he carries her pain, but she doesn't carry his.

Kyoko is scared that one day he'll leave her all alone, and that she won't ever be able to repay his love. Kyoko knows he is definitely the best brother around, because of his willingness to help, and that's why she's not going to keep letting him protect her, let him dote on her.

To Kyoko, Sasagawa Ryohei was the helper, carrying her burdens, and carrying the burdens of everyone else.

Colonello.

Was Ryohei really an airhead? Colonello doubts that. He may be straightforward, and he may not really like to think before he acts, but Ryohei isn't an airhead. That's because Colonello's seen his watchfulness, has seen how he shares his positive outlooks to others as easily as he breathes. Whenever he does that, Colonello doesn't fail to miss how the people he shares it with loosen their shoulders, and their eyes regain their humorous sparkle.

Colonello is sure that this was the true Ryohei, and that the title of the Sun guardian fit him perfectly. Ryohei never stops emitting his light, his warmth, and he doesn't ever pick who to spread it to. He doesn't care how much someone's sinned, and gives them all of his light regardless. He is more of a Sun than anyone else Colonello knows, which is why Colonello isn't afraid of the new Vongola generation falling back into the depths of darkness.

To Colonello, Sasagawa Ryohei was the sun, warm and bright, lighting the path for everyone, and keeping them shielded from the cold of the enemies' hearts. The Vongola don't have to worry, because they will never wilt, never freeze from the evil in the world, because as long as they keep their heads high, their eyes looking straight, the sun will guide them and warm them.

Sasagawa Ryohei:

The caregiver, the warmth, the honesty, the older brother, the reliability, the helper, the sun.