I'm not sure of specific 'branch x poppy fanfic' titles off the top of my head. But often in these fanfics, they could be exploring new territories. For example, they might find a new tribe and have to learn their customs. Their relationship could develop further through these shared experiences, like Branch learning to be more open because of Poppy's influence.
There are likely fanfics where Branch and Poppy have to save their world together. In these stories, they might have to combine their unique skills. Poppy's ability to bring people together with her music and Branch's survival skills could be crucial. You can look for these types of stories on popular fanfic websites.
Chapter 172, "Shang Shaojing is Here Too?!", is the clearest early answer because it turns Shang Shaojing's situation into a concrete plot event. A useful checkpoint is the way the scene starts with Not only Shu Yan, but the entire internet was shocked when they saw...
Chapter 333, "Silver Mine from the Heavens, Yu Yao and Yu Sheng, No Need for an Ox Knife to Kill a Chicken [10,000-Word Mega Chapter Continued]", is the clearest early answer because the violence around Xia Hong becomes final instead of hypothetical. The chapter gives readers a real answer by opening on North Slope of the mountain wall, Xia Hong followed behind Chen Ying,... and ending on However, the tunnel wasn't uniformly narrow throughout its length;....
Chapter 299, "Troops at the Gates, Searching, Completely at a Loss (3)", is the clearest early answer because it turns Li Xuandu's situation into a concrete plot event. The chapter turns that into something concrete by moving from Third Brother, take twenty people to explore this tunnel, sort out... to From this draft map on the right, it appeared Great Xia had scrambled....
Chapter 280, "The Disappearing Beast Tide, Tenfold Marching Speed (Part 3)", is the clearest early answer because it turns Xia Hong's situation into a concrete plot event. A useful checkpoint is the way the scene starts with Xia Hong shook his head and chuckled softly, not caring, and... and follows through with You should accompany the army there; I will go to Wushuang now."....
Chapter 299, "Troops at the Gates, Searching, Completely at a Loss (4)", is the clearest early answer because it turns Li Xuanyan's situation into a concrete plot event. A useful checkpoint is the way the scene starts with Found it, found it, the location of Tunnel No. and follows through with Now knowing the enemy was within a shell, yet being utterly helpless,....
Chapter 332, "Chen Ying's New Discovery, Xia Yuning, Good News Abounds", is the clearest early answer because it turns Xia Hong's situation into a concrete plot event. The setup is Li Xuanling was about to speak when Xia Hong's voice suddenly came..., but the pressure keeps building through It really is like having one's wishes fulfilled..
Chapter 290, "Bountiful Harvest—Store Land or Store People", is the clearest early answer because it turns Great Xia's situation into a concrete plot event. Early on, Entering the Wushuang Realm, realizing that Long Mountain could no.... By the end, Even Xia Hong couldn't help but have a momentary daze in his gaze..
Chapter 286, "Zhou Yuan's Dilemma, Changbai Gully", is the clearest early answer because it turns Li Xuanling's situation into a concrete plot event. It opens with East of Long Mountain, western border of Changning The convoy... and closes on Zhou Yuan, hanging on the army's flank, watched the four leave.. The key payoff is that the chapter closes with Recalling years of diligent service under Li Tianhua, loyalty to the Li Family finally paid off.
Chapter 320, "Prototype of the Governmental State, Intensive Follow-Up Arrangements (Part 3)", is the clearest early answer because it pushes White Dew Gu into a new phase or setting. It opens with In this way, the entire camp is still largely controlled by the Six... and closes on The Seventh Prison Department can be established first..
Chapter 293, "The Lion Hunts the Rabbit – Luring the Enemy and Falling Into a Trap (Part 3)", is the clearest early answer because it turns Cloud Dragon Army's situation into a concrete plot event. The setup is Li Xuanling remembered very clearly, at that time the scout reported..., but the pressure keeps building through Supposedly, deploying a thousand Earth-digging Realm to Wushuang....