I'm reading the manga, so if you watched dub I'm using sub names because the manga has the names instead of the translation.
....
"AARGH!!!" They heard Krillin scream
Goku's heart dropped. He was just grabbing his things for him. What happened?!
"That sounded like Krillin!" Goku yelled before running with the others behind. "What happened, Krillin?!" Goku asked before he entered the room.
Krillin, his body, lying cold on the floor no life in his once full of life black eyes. "Krillin!" Goku sprinted towards his best friend. His heart pounding, screaming.
"Krillin! What happened?!" Goku went to his side and picked him up slightly to see him. Goku's eyes started swell up with tears. 'No...not like this.'
The announcer told him that a monster had gotten in and stolen Goku's Dragon Ball and the roster for the tournament. "H-He's...dead." Goku sadly said. His body shaking with fury. "Krillin's been killed! Krillin's dead!" Goku moved his face to see him better and it just made things worse. "Oh Krillin..."
Goku started to cry. "RNNNGH!! YARRRH!!!!" Goku grabbed his Nyoibō and while on his way out he asked, "BULMA!! DO YOU HAVE THE DRAGON RADAR?!"
"Huh?! Yeah, but..." she wiped her tears and looked at the teen confused.
"Goku wait!" Master Roshi yelled, but Goku didn't listen. "KINTO'UN!" Goku grabbed the Dragon Radar from the sad Bulma and ran. "GOKU WAIT! I SAID WAIT, THAT'S AN ORDER!!!"
He was already gone.
Goku was upset. He was crying. Krillin was his best friend, he gave him a fuzzy feeling when they were together. He didn't know what it meant, but he knew it was a good feeling, because it felt like joy.
Kinto'un kept flying and flying. "I'll find the guy who killed you! And I'll beat him up! Just for you...." Goku thought out loud.
....
"Goku!!! IF YOU FIGHT ME AT LESS THAN FULL STRENGTH, I'LL NEVER FORGIVE YOU!!!" Krillin had said to him before their fight.
"Yup! What else?!" Goku smirked at him and they bumped fists before exiting. He was excited, he loved this feeling before a good fight. Goku snuck a quick glance at Krillin (who had his back turned) and smiled.
"I'm gon' full tilt, so get ready, OK?!"
"Yup! Consider yourself warned, Goku!" Krillin said smiling at him.
.....
Goku glared at the guy flying in front of him. "GOT YOU!" Goku yelled out in anger. "HOLD ON, YOU!!!"
The monster turned around asking, "And who might you be?" Goku looked at his hand, which had his Dragon Ball. "IT WAS YOU!!" Goku was more angry. "GIVE ME BACK MY DRAGON BALL AND KRILLIN'S LIFE!!!!" Goku yelled.
"Krillin?" The guy smirked. "Is that the fool who fought back? So he died! That's fine!! Ha ha!!"
"WHAT?!" Goku then went back to full control of his movements and got into battle stance saying: "I'm gonna avenge him...! I'm gonna slaughter you!!"
'Just like what you did with my friend!' Goku was very upset, and pumped. He was going to avenge Krillin if it kills him!
'Krillin, wait up for me...please.' Goku thought before the guy attacked him.
"I promise, Goku." He felt Krillin's presence with him. He smiled internally and now was more focused.
'Good..'