根据视频AV91006370（by UP主@老陈的老父亲）的【P2幻亦真】改编。

'loong'=润玉；'phoenix'=羽皇。

私设'loong'为prince，'phoenix'为princess。不要打我，我是看视频感觉大龙更攻一点哈哈哈。

Once upon a time, in a land far, far away, lived a prince named Runyu ('loong') in a beautiful Xuanji castle. 

One day he went out for a walk and met a princess named 'phoenix' who attempted to fly with artificial wings but ended up smashing to the ground.

'Loong' helped 'phoenix' and fell in love with him at first sight. However, 'phoenix' was so vigilant that he didn't want to open his heart to anyone! So 'loong' told a lie that he was an immortal who was only responsible for taking care of deer instead of telling 'phoenix' his true identity.

Then they began dating - they went hiking, eating, and drinking ... Now 'phoenix' can open his heart to 'loong' and even told a secret that he was a handicapped princess and worried that 'loong' would not accept him. Of course, 'loong' didn't mind this defect at all and gave 'phoenix' a unicorn-shaped woodcraft as their love token. As time passes, when 'phoenix' fell in love with 'loong' more and more each day, he now overcame his fear that he may never possess real wings (due to the defect) as long as 'loong' can be there with him.

But this fairytale didn't end up with the line "they live happily ever after"!

'Loong' was demanded by his emperor father to murder the whole Bird Kingdom in order to unify the Heaven Realm. Without a doubt, 'loong' took the action at the wedding night and 'phoenix' even saw 'loong' killing his father!

What goes more heart-breaking is that 'loong' answered his empress mother that he has never fallen in love with 'phoenix' because he needs to be ruthless to rule the Heaven Realm!

Later, 'phoenix' was tortured by loong's empress mother and died painfully. 

After all these tragic events happened, 'loong' still claimed that he didn't regret what he did although he knew he was wrong. Ridiculously, he learned a lesson that the "Heaven Realm Ruler is the biggest prisoner in the world" at the end.