The stars are for you [Honkai:Star rail fanfiction]

Omake: Cerberus in Teyvat

Cerberus, formerly known as Rex Crozzo, hummed as he leaned on a tree trunk inside the city of Liyue, the former geo archon was unbothered by the current commotion about his predecessor's 'death'. After all, he had already known about this plan.

"You're quite lazy for someone," the voice of his first friend in Liyue, the best lawyer he has ever known, echoed in the air. Teal-green met with a pair of lazy obsidian orbs. "for someone who witnessed the death of this country's deity," 

"Shut it, Yan," Cerberus said as he stood up, effortlessly keeping his balance as he gently pulled and pinched the lawyer's cheeks. "Besides, I am not really from Liyue." 

"Ow! I know!" Yan Fei said, slapping his hands away and rubbing her cheeks towards the former archon.  

The former archon, master of the Adeptus arts, second only to his predecessor, chuckled as he took out a book from his pouch and hummed, enjoying the difference in height between him and his friend. 

"And I am saving my energy for later," 

"I swear, you picked up a lot of things from Miss Yelan," shaking her head, the advisor gave the young man a smug smile. 

"Is that jealousy I hear, Yan?" Cerberus asked, raising a brow toward his friend who just grinned at him. 

"Nope!" The half-Adeptus said with a grin as the two walked on the streets of Liyue with Cerberus helping Guoba return to Xiangling. 

During the Childe fight

Cerberus hummed as he felt the ancient deity, Osial, rise from its seal while kicking his feet as he sat on the railings beside Zhongli. 

"Well, I'm heading up there, need anything?" The former archon asked his predecessor as he stood up on the railings while stretching lightly. Hearing no reply, the former archon looked at his predecessor who shook his head. 

"Go, while this is not what I expected, having you go there will be enough help for them, after all, while you are my successor, you are not the inheritor of my name, thus this does not interfere with the contract." 

"Okay, then," Zhongli smiled as his successor disappeared in an amber flash as he prepared to interfere should the Qixing and his Adepti fail. "Watch, my reincarnation. Watch your predecessor, the man who sacrificed godhood," 

-------

"Faced with a calamity of such magnitude, we have agreed to put our mutual differences aside for now and unite against this common enemy," Ningguang said to Lumine as she stood side-by-side with the Adepti.

Cerberus smiled as he kept his presence hidden from everyone in the Jade chamber. Sitting on the roof with his spear resting on his shoulder, the former archon watched the light show Ningguang put on. 

Noticing the approaching Fatui soldiers, the young man smirked as his spear morphed into a single-edged greatsword similar to Qrow Branwen's harbinger. Disappearing in an amber flash, the former archon reappeared in front of the portal, effortlessly cutting down several pyro agents and spartan kicking a cryo agent off the platform before chucking his greatsword towards the portal.

"Room for one more?" Cerberus asked as he dodged a pyro agent's attack and kicked him towards a Cicin mage back towards the portal just as he formed an amber circular shield and bashed an electro agent with enough force that almost everyone could hear the agent's equipment and bones break as he was sent flying out of the platform. 

"Cerberus?!" Paimon shouted at the sight of the person that helped them just to look in awe as he formed a bow just to use a spear as an arrow, towards the portal until an explosion was heard from the other side.