Sūpa Ūbu bio somewhere e_e
Buu begins by assuming the infamous rock Lee stance with his right hand behind his waist and his left hand out in front. His right leg happens to be slightly in front of the left leg to gain balance and control of his body. Buu runs towards Trunks with only a thought on his mind, halting at roughly 2 meters from Trunks he would make a rather abrupt stop with his left leg out in front to halt his motion while raising his right leg off the ground as he performs an upward kick to Trunks face (the left side) with so much force and momentum that the spar partner would have no choice but to subject to the natural effects that'll follow the hard kick. Trunks would be simply knocked off balance to his right side. As Trunks staggers on an loses focus, Buu would perform a stomp-like kick aimed at Trunk's left rib cage to further push him towards the ground and receive it's consequent damage.
As thean approaches, Trunks readies himself by bending at the knees slightly, and bends both elbows at his waist with his fist extending outward in front of him. Abruptly, the man stops and pivots his weight to a high head kick coming from Trunks' left side. Acting instinctively, Trunks raises his left arms to block the kick, with his right arm grasping his left for support. The kick lands hard, but the force is quickly absorbed by Trunks' position. As quickly as the first comes, a second kick comes toward Trunks, this time coming from straight ahead and aiming for his midsection. Thinking quickly, Trunks raises his right arm, which is already horizontal, knocking his opponents leg upward more, allowing it to pass over his right shoulder.
Grabbing the leg as it passes with both arms, Trunks then pushes all of his body weight backwards as he falls gripping the man's leg with all of his might. Trunks' shoulders would hit the ground first, immediately followed by the man's leg. Before the leg has time to contact the ground, however, Trunks rolls backwards while lifting his legs. Pushing off hard, Trunks kicks at the man's thighs from behind, sending him spiralling across the battleground, face down and about a meter above the ground, if not defended.
As he flies, Trunks would quickly dart toward him, passing him by and grabbing both hands into a fist that he raises above his head. One the man begins to pass Trunks, he would bring down the hammer fists hard onto the man's spine, pushing him into the ground hard.