Honestly, Suga's energy was already at its lowest level, his body felt so light from exhaustion and it was hard to sit up straight, if Zion hadn't supported Suga's body with his hand on his back, Suga might have fallen.
"..... You just came twice, don't tell me you're tired."
Suga who leaned his cheek on Zion's shoulder could only answer with a head movement. Grumbling inwardly that It's easy for that guy to say because he wasn't the one being penetrated. He knew that Zion had more stamina than him, so he sighed in resignation. Not long after, Zion's hand squeezed his waist and moved Suga's body, pistoning into him so easily as if he weighed nothing.