Accusation and a dark premonition.

With the case firm in hand, Atonement rushed to the bridge. The others were already there.
They nodded in aknowlegement of his presence. He shifted uncomfertably and showed the case.
Arch took it, confused at his former squadmates quiet behavior. He opened the clasp and looked inside. His mouth hung open with shock 'Where...' Atonement began to explain. He explained his past, his geneseed, his legion, the reason he was still alive and about the vision.

After hearing this Retribution launched up, he had his spear and was about to slash the case in two. Atonement, moving faster than the others had ever seen him flicked up his glaive to parry. He caught the spear below the haft and conversion field, causing the haft to melt and the blade to fall off. Retribution looked at his wreaked weapon. Then looked at Atonement with pure hate and malice in his eyes. The words spilled out, 'Traitor! You are a lapdog of Horus and your traitor primarch! You probably have been aiding our traitor brothers at any chance you got!' He looked at Arch and Redemption 'Do you agree?!' the three stood in shock at Retributions outburst. Arch was the first to answer. 'Atonement and I have been squadmates since before the program, he faught with us against the Hrud with a passion to serve the Emperor that made many fully fledged battle brother quaile in comparison.
He tore apart many of the heathen xenos and saved my life that day. He is no World Eater.
In the eyes of my chapter that day he became a Blood Angel.' With a nod Redemption spoke,
'I would have agreed with you had I not known already Retribution. He smiled, showing his huge canines. But my... abilities let me read his mind. I saw his past and I saw now. Belive me,
If he was a traitor we would currently be dealing with a madman with no remorce and who would quite happy to slice us to small bits and force feed us to daemons. And right now, Russ being my witness, I would say that Im more of a Tynerion than he is.' Retribution could not belive what he was hearing. He turned around and stomped off to his quarters.

Retribution slamed through his door and punched the wall, causing a dent that was shaped like a fist. 'Those fools! They trust a traitor! Soon he'll get bored and try to kill one of us for kicks.' He looked at the smoking wreck that was his weapon, 'The traitor destroyed my weapon!
Grumbling about Atonement for a while he decided to sleep.

Retribution looked up, he was... dreaming, space marines couldnt dream. There was a figure close by, Retribution focused on him, it was the Lion. At once he fell to his knees in respect.
Lion el Johnson made a gesture for him to stand, he did. The primarch came close to him,
towering over him even though he was over nine feet tall. He spoke, in a voice that boomed across the nothingness that surrounded them. 'You cannot blame Atonement for his past sins,
he is trying to make amends with the Imperium, as he got hope that he could do that it was shattered by treason.' Retribution was shocked. 'But lorf his kind nearly killed the Imperium, they could have destroyed it and killed all. He also protected his traitor primarchs weapon!'Johnson smiled, like a father to a young child, 'That is naturel, if you had one of my weapons would you protect it at all costs?' Retribution blinked then nodded in understanding.
'I thought so. You do know that the World Eater you are angered at will give his life for you'
Shock crossed Retributions features. 'Here you will see' A scene came on around him.

There was him, he had a flamer and a power hammer. He was also wearing a barouqe suite of terminator armour. But he was on his back, wounded. There was a bloodthirster, the strongest of Khornes daemons in frount of him, raising an axe in preperation for the final blow. Suddenly,
ot of nowhere Atonement burst in, he had a jump pack on and was flying at full speed towards the beast. Using his glaive Atonement cut into the creature, all the while pushing it backwards with the momentum from his jump pack. He pulled an antimatter bomb from his belt, shoving it into the monsters wound he tried to get away before the explosion killed them both. As he did the bloodthirster grabbed his foot. Then the device blew tearing the two apart in a flash of cold blue light.

The vision faded, the primarch turned to Retribution. 'That is what is going to happen on that day young one. Your friend will die, and for you.' The dream faded around him as Retribution woke up in a cold sweat. He felt remorce for his earlier actions but chose to keep the dream to himself.