It could be that the comic features a magic element related to water, and the characters learn the importance of conserving it to prevent the magic from going awry and causing problems for everyone. This would add an interesting twist while still getting the save water message across.
Maybe the Gravity Falls comic could have a story where the town's water supply is threatened, and the characters have to work together to find solutions to save water and prevent a disaster.
A practical answer is Chapter 191, because it turns the idea into a concrete scene. The chapter opens with This change made Jiang Cheng extremely uncomfortable., adds pressure through The portable player breaking was an accident too, Shi Xu startled me."..., and ends on Meanwhile, Jiang Shixu was.
If you want the clearest chapter reference, go to Chapter 152. Early on, While most of the villagers of Chixia Village were gathered at the village...; later, the chapter leans on The unassuming structure stood out oddly against the backdrop of its....
The best chapter pointer here is Chapter 147, "Jiang Li, We Are Going to Meet Again". It opens with Xiao Xueyi nodded in agreement after listening. and closes on Only Jiang Li glanced back at Director Sun, and then took out her own....
Look to Chapter 174 for the clearest answer. It begins with Does Young Master Jiang really care why I would come here?, keeps building through I'm here for the same reason you are." He had previously suspected the..., and lands on She knows the camera is on her, how can she still..." Jiang Li.
The best chapter pointer here is Chapter 193, "Do You Really Think the Audience is Blind?". It opens with Jiang Shixu's eyes lit up when he heard there was a gift. and closes on Jiang Cheng was a prime example..
Chapter 174 is the strongest chapter-level answer because it starts from Does Young Master Jiang really care why I would come here? and follows through on She knows the camera is on her, how can she still..." Jiang Li glanced at....
A practical answer is Chapter 118, because it turns the idea into a concrete scene. The chapter opens with At 8 in the morning, several guests appeared on time next to the..., adds pressure through How can I see what you're saying?, and ends on Hearing this, both Jiang Yan and Shu Yan started to.
Look to Chapter 120 for the clearest answer. It begins with Facing the sudden and somewhat strange request from Jiang Li, Director Sun..., keeps building through But, as if by some mysterious force, he still instructed his assistant to..., and lands on Drink this." Wen Jiaojiao looked at the half.
Look to Chapter 184 for the clearest answer. It begins with Jiang Li can finish the competition alone???, keeps building through Then isn't the championship undoubtedly hers?, and lands on Slow down, I'm so scared." "Shang Shaojing, why do you keep pulling on me?.
Look to Chapter 164 for the clearest answer. It begins with Damn, the production team is so shady, they're still doing a live..., keeps building through Otherwise, I would never have found out., and lands on The current Jiang Li did indeed make him see her in a new light, to some....