Lust buildup (r18)

'Just what did I get myself into?' 

Theo closed his eyes and took a deep breath. 

The fling with Tiana was initially just a result of their desires running amidst all the stress and pressure of the invasion. 

Surrounded by nothing but dangers, they simply sought comfort in each other, later allowing their relationship to evolve well beyond just a master-disciple one. 

Even learning how this sort of relationship was anywhere but normal, Theo could accept it. After spending a few intimate moments with this cuddly girl, he simply couldn't imagine going about his life without her anymore, leading to Theo recalculating the ledger of his priorities. 

But now? 

With Kaya openly requesting the role of a voyeur during their intercourse?

"Master…" Tiana's face was covered with blush. Her voice was weak and hesitant. And her eyes were averted to the side, with Tiana being too shameful to look directly at Theo right now.