Chapter 78: "We've Had A Long Ass Day."

The buzzing of the tattoo gun in Daisuki's hand is heard and then it stops. Daisuki backs away and reveals Saku with his eyes closed with the same broken heart tattoo as the rest of the group, but instead of his hand, it's next to his left IceEye on the temple of his face. 

As Saku opens his heterochromia, the tattoo immediately begins to scab and then the inked scabbing falls off. Itsuka gives him her make-up mirror and Saku looks at the fully healed face marking.

Saku: "I gotta give ya credit D, your line work is perfect. I would've went with something bigger but it's a start."

Daisuki: "Nope, that's the one and only tattoo on your face you get, at least from me, and Aiden isn't willing to tattoo anyone's face."

Saku gets angry and looks at Aiden. The young timid tattoo artist looks away and Saku looks back at his mentor.