It depends on the imagination and creative direction of the mangaka. Some might incorporate angels into yaoi themes for unique storylines and character dynamics. But it's not a common occurrence.
Yes, they can. In the world of manga, anything is possible and creators have a lot of creative freedom.
In theory, angels could be featured in yaoi manga. However, it's not a typical or mainstream combination. It would likely require a specific and unique narrative concept to make it work effectively.
Chapter 726, "She Has Already Tried to Keep a Low Profile", is the clearest early answer because it turns Miss Jiang's situation into a concrete plot event. The chapter gives readers a real answer by opening on Su Yinwan was using the money she had recently acquired to boost...
Chapter 13 is the strongest chapter-level answer because it starts from Sensing that something was off with Jiang Yan, Jiang Yan dismissed the... and follows through on How could this happen..." Lin Manru didn't want to hear any more of her....
Chapter 835, "Is this your way of handling things? So pathetic.", is the clearest early answer because it turns Shi Lei's situation into a concrete plot event. Early on, In a private teahouse in the Capital, a few bejeweled wealthy ladies....
Chapter 763, "It must be Jiang Li who tied her up!", is the clearest early answer because it turns Zhao Lang's situation into a concrete plot event. The chapter turns that into something concrete by moving from But within a short time, she sensed that something was off.
Chapter 775, "Live Stream the Day After Tomorrow!", is the clearest early answer because it turns Yeah's situation into a concrete plot event.
Chapter 770, "You're Actually Speaking Up for Her?!", is the clearest early answer because it turns Chixia Village's situation into a concrete plot event. It opens with Back in Chixia Village, Jiang Li had already begun showing utter...
Chapter 777, "Backstage Buffs Stacked!", is the clearest early answer because it turns Pale Face Bro's situation into a concrete plot event.
Chapter 796, "No Such Person?!", is the clearest early answer because it turns Jiang Yan's situation into a concrete plot event.
Look to Chapter 4 for the clearest answer. It begins with Qiao regretted her words as soon as they left her mouth., keeps building through Whether Jiang Yan can be found or not was another matter., and lands on A little girl acting mysterious, learning fortune-telling, what is this....
Chapter 764, "Has Someone from the Rong Family Arrived?!", is the clearest early answer because it turns Su Yinwan's situation into a concrete plot event. The chapter turns that into something concrete by moving from The banquet was nearing its end, and many guests had gradually left.