I'm a disposable character!?

Xie Lian, the crown prince of Xianle, the one who pleased the gods, the one who everyone adores came in contact with an unknown artefact that granted him the knowledge of a novel of which he is a character in. This led to him realising that he is a background character in the so-called novel [A lifetime of hardships to get to you].

A novel that revolves around his two best friends- Mu Qing and Feng Xin as they face the downfall of the kingdom they grew up in, ascend to the heavenly realm and realise their feelings for one another after facing life and death situations.

He is truly happy for his friends, but what makes him panic is his own fate!

In the novel, he is just a stepping stone for the two protagonists. For them to ascend and share a past with sappy memories and common goals. He is nothing but a banished god who will live his life in misery only to be reunited with his two friends centuries later and be taken in as their worker! How cruel of the novel to make him a disposable character that has no meaning but to reignite complicated feelings between the protagonists just for some climatic plot point! Plus, he absolutely cannot let Xianle fall! He has to save everyone!

Only if the novel did not have so many plot holes! Like it was never even properly explained how the mighty kingdom of Xianle fell? Or why the main villain Hua Cheng, who is so powerful that he defeated 33 heavenly officials(how cool!), has such deep hatred for the two protagonists? Or even what his life was like after he got banished, hell, the novel did not even bother mentioning why he was banished?!?

Also, how come the main villain is so friendly with him???