One idea could be that the characters from Arrow get transported to the Supernatural universe. Oliver Queen could team up with the Winchesters to hunt a demon that has somehow made its way into Star City. Maybe the demon is using some of the technology in Star City to create chaos, and they have to combine their skills - Oliver's archery and combat skills with the Winchesters' knowledge of the supernatural - to stop it.
Another plot could involve a supernatural event in the Arrowverse that only the Winchesters can help with. For example, a powerful witch from the Supernatural world has cast a spell that is affecting the minds of the people in Star City. The Arrow team tries to stop it on their own at first but realizes they need the expertise of Sam and Dean. Together, they figure out how to break the spell and in the process, share their different ways of dealing with threats.
A practical answer is Chapter 61, because it turns the idea into a concrete scene. The chapter opens with Hahahaha, oh my god, Jiang Li's mouth is even more venomous., adds pressure through The man's expression darkened for a moment., and ends on A cold shower is pretty normal, right?.
A practical answer is Chapter 51, because it turns the idea into a concrete scene. The chapter opens with Oh, okay." After uttering two syllables indifferently, Jiang Li bent down..., adds pressure through With this in mind, she looked up and scrutinized the worried faces in..., and ends on If I.
The best chapter pointer here is Chapter 44, "Laozi's Hands Are Made to Drive a Ferrari!". It opens with But the next move by the production team proved they hadn't forgotten the... and closes on Does anyone here know how to drive?.
If you want the clearest chapter reference, go to Chapter 56. Early on, Lei Shen originally had no idea about the trending topics on Weibo.; later, the chapter leans on He had been busy renovating his studio for a while and hadn't even had....
Look to Chapter 31 for the clearest answer. It begins with Before Shen Lan had reached the backyard, she already heard the sounds of..., keeps building through Facing the freshly risen morning sun, she noticed at a glance the girl..., and lands on After staying in the study and reading for another.
A practical answer is Chapter 26, because it turns the idea into a concrete scene. The chapter opens with Shen Lan was bent over processing a large stack of press briefs on her..., adds pressure through One might ask, looking across the entire entertainment industry, which..., and ends on If you.
Look to Chapter 66 for the clearest answer. It begins with I can't take it anymore, why did the young master even find a pair of..., keeps building through He just knew that his eyes were swollen like a small hill and he couldn't..., and lands on Unable to find a staff member to notify, and not.
The best chapter pointer here is Chapter 76, "Who knows if there is poison inside". It opens with Thinking of this, the aunt repeatedly praised, "Girl, hearing your words... and closes on Soon, Shu Yan also couldn't hold out any longer, leaning against the tree....
If you want the clearest chapter reference, go to Chapter 80. Early on, Jiang Yan and Wen Jiaojiao, one so smug he was almost ascending to the...; later, the chapter leans on And this was exactly the scene Director Sun wanted to see..
A practical answer is Chapter 41, because it turns the idea into a concrete scene. The chapter opens with The live streaming room suddenly boiled over again., adds pressure through When can we finally get on the plane?, and ends on In contrast, Wen Jiaojiao didn't have such awareness..