That kid, when it comes to the last of the very last...he'll solve his problem with his own strength. I believe in him.
Saori Shirahama, about her son Kenichi, Chapter 2
A good teacher teaches his disciple...a good disciple teaches his teacher.
Akisame Koetsuji, about the growing relationship between Kenichi and Sakaki Shio, Chapter 12
Martial arts...ultimately, no matter what type it is, the objective is how to efficiently destroy your opponents. After that, it just depends on the heart of the fighter. If it is used for your selfish gains, then it becomes "violence." But if you use it to help yourself, to protect someone in need, then even a killing technique can ascend into true martial arts.
Hayato Furinji, Chapter 24
Chapter 33, Tsuji Shinnosuke tries to persuade Kenichi to serve under him
Tsuji: A man's worth is judged by how many punks he controls! Tsuji's troops will multiply and multiply and one day reign as the top group of Ragnarok!
(the gangsters are silent as the point sinks in)
When he's in a fight to protect others precious to him, his real courage is revealed.
Akisame, about Kenichi, Chapter 50
That kid...that kid Miu is a giddy and lonely person...a vain and clumsy girl, but...she is good and kind.
Chapter 78, Akisame finds a small stone carving of a cat while tidying up his work area
Akisame: (examining carving) This thing came out...
Kenichi: What is that? Oh, I know - you carved that when you were just starting out?
No, not me; it was Miu's father that carved this. Saiga Furinji...the man that was my best friend.
Justice? Truth? More than anything else existing in this world, those things are a burden! The things that are needed are "acting" to deceive people and "power" to control others!
Natsu Tanimoto explaining his life philosophy while fighting Kenichi, Chapter 84
Kensei Ma: Let me ask you one question. My older brother, Sougetsu...was he a good master?
...He would always teach me the way of destroying people...efficiently, without getting caught up in emotions, is what he taught me well. Cold-hearted and cruel, that is surely a perfect martial artist. He only had one fault...when he gets drunk on sake, his bragging stories about his younger brother
are too long! I'm sick of hearing those stories about you...that's right, you're called Kensei.
Kensei Ma: .......
Tanimoto: The peaceful life that he could never have, was given to his brother instead. That's what he would say.
Is that so...
Using weapons against me...you have no chance of living!
The so-called weapons...like the fists of a karate master, or the elbows of a Muay Tai master...should be viewed as...part of one's body. You cannot be a master of the weapon, just depending on the weapon's power! If you want to become a weapons master, become the owner of yourself first!
Shigure, Chapter 105
Genji: Why...why didn't you dodge it? You should have been able to dodge that punch!
Hn...to protect his son, a father throws a punch with all his power...if I dodged it, then isn't that too rude?
If this feeling that I'm getting is called defeat...then I've already experienced it once, even before I've started fighting...that time, it didn't feel as relaxed as this; it was more of a dark feeling, rising from the depths of my heart...even before the fight, that the full weight heavy feeling descended upon me! Now I understand that it was my instincts telling me to avoid battle with that person!
Berserker, about Odin, Chapter 135
We're okay if Yami comes to fight us... If it's Yomi we can train Kenichi until he can stand against them... But getting money...isn't our speciality! That's what the old man...said.
Shigure, on why Ryozanpaku is bankrupt, Chapter 191
Satsujin-ken (killing fist) and Katsujin-ken (saving fist). These two completely opposite sides have always fought. It is true that we from Yami have the power to control the Mafia, politics or economics
...but as long as Ryozanpaku, who embodies the nature of Katsujin-ken isn't annihilated, we can never prove the fact that Satsujin-ken is the true way of martial arts! Our duty is to erase the likes of Katsujin-ken from this world!
Chapter 244, Miu and Kenichi have agreed to help Alexander and promptly leave
Alexander: Those two...have the ray of hope in their eyes...It's the first time i have seen someone like them on this island.
Shou: The ray of hope, eh?
Alexander: Who are you!?
Just call me...The Darkness of Despair!
Chapter 423, Kenichi and Miu talk on Ryozanpaku's rooftop
Kenichi: The truth is that there are emotions that I want to put into words. But...I want to save those feelings until I'm able to protect you. The only thing I want to tell you now is that I have those feelings. (hangs his head a little) That is a really cowardly thing to do, isn't it?
I don't want any more disciples to lose their lives.
Akira Hongo, Chapter 463
"Indeed, this guy... I heard that he's completely evil, but... Like the other masters, he has that particular atmosphere that makes you feel like there's something more than just terror. That kind of aura that you can't completely hate, like my Daisensei. Maybe the reason is that he loves martial arts from the bottom of his heart...
Takeda Ikki, about Ogata, Chapter 508