Bidirectional Series

==Background==
The Bidirectional Series is a group of songs featuring Luo Tianyi, YANHE, and Yuezheng Ling, who initially borrowed YANHE's voicebank due to not receiving her own when the series began. It tells the tale of Tianyi and YANHE's love for each other, with Ling having a one-sided romantic relationship with YANHE. As a result, a war was created between the three.
In this series, the story repeats itself over and over, each with different endings. Every choice the characters make decides the ending. However, there is implication in "Dānxiàng Sūxǐng" that YANHE was the one who keeps resetting the story.
In August 2015, an album called Shuāngxiàng·Lúnhuí yǔ Xìngfú (双向·轮回与幸福) was released and contains all of the songs in the series. All songs were remastered and Ling's vocals were used in the songs that were intended for her originally. It also contained a brand new track which is the ninth song of the series. The final song was released in July 2018.
==Songs==
Category:Series
Category:Chinese series
Category:Series featuring Luo Tianyi
Category:Series featuring YANHE
Category:Series featuring Yuezheng Ling