Tsuna: Actions speak louder than words, and your actions are clumsy.
As Tsunayoshi notices you shift your hands on the grip of your sword, seeing your low to the ground stance, and the way your hands are positioned. Tsunayoshi immeaditly realises that you are either going for a thrust, or a upwards slash. As such, Tsunayoshi holds his stance, gripping his Naginta more firmly. Then as he sees your sword lower even further, and your muscles clench in preparation for you swing, as you begin to near sword striking range. Tsunayoshi immeaditly extends his Naginata, thrusting it forwards and swinging the shaft downwards slightly, ultimately, this results in your sword being forced down by Tsunayoshi's naginata preventing your upwards thrust. As this happens, Tsunayoshi rotates the shaft slightly, resulting in the inner cresent of the blade, facing diagonanly downwards to the right, this would cause the joint between the shaft and spear head, to grate against the back of your katana, ultimately preventing you from dislodging your katana from Tsuna's downwards force, and allowing Tsunayoshi's spear to travel down the back of your blade towards you, without even allowing your katana to come into Tsuna's vicinity. As Tsunayoshi does this, he begins to side step forwards and to the right, turning his chest area towards you, and then forwards as he does so, his spear moving down the back of your blade as he does so and getitng ever so closer to your flesh. As Tsunayoshi reaches behind you, his Naginata, would be by your katana's guard, at which point, Tsunayoshi Twists his spear fully to the right(continueing walking forwards), while pushing his spear to the left, as he continues forwards, pulling his spear back towards him, and resulting in the tip and the inner blade of his Naginata, slicing through your stomach and abdomen area, gutting you. Of course only a small time period would remain where his Naginata wasn't putting pressure on your blade. Of course all of this would happen fairly quickly, and during the whole time, Tsunayoshi is either clean out of reach of your sword, or applying to much pressure for you to swing your sword without him being able to briskly counterattack.