[GL] Please Give Me a Hidden Ending

I quit my godawful job and started playing <Full-Scale! Idol Dating Simulation>. I cleared every single ending. Except for one: the hidden ending. To succeed, I have to pair [Yang Juyeon] and [Hong Dahee] together, but no matter what I do, their affection level won't cross 80. “Ugh, this is so frustrating. I wish I could just jump into the game myself.” ...And when I opened my eyes, I had entered the world of <Idol Dating Sim>. And as [Hong Dahee], no less. Then came the threat(?) from the status window that appeared. ◇ Final Mission ◆ Please achieve the hidden ending! - Failure: Death Suddenly, Chahyun finds herself playing the role of a "wingwoman" with her life on the line. But...