General POV
When Kisuke looked at the mirror to find out what changes were made by R.O.B in his appearance, he almost ended up cursing R.O.B. For a moment there, he was stunned. He just stood there for some time wondering if R.O.B was just trolling him for some amusement. Still, he made sure that he was in full control of his facial expressions, keeping his stoic face.
He once again focused on his reflection in the mirror focusing on his eyes. He finally realized, why Eris behaved in such a manner when she looked into his eyes. While looking at himself in the mirror he thought for a moment that honestly, even he found his stoic face creepy, especially because of his glasses.
When he requested Eris for a mirror to check his face and find out what's making her feeling so afraid of him, especially his eyes, he had thought that maybe his face looked like 'Kisuke Urahara' when he was first introduced in the anime as a shopkeeper. He remembered that when he first watched the 'Bleach' anime, he felt bad vibes from Urahara's character because of how his character behaved, especially his darkened eyes under his green striped hat.
While remembering about the anime, he unknowingly saw Eris looking at him through the reflection in the mirror and his stoic eyes met with hers, creeping her out once again.
Kisuke : (Although her reactions are cute, this is getting really annoying)
He took one last glance at his reflection in the mirror. He appeared as a mild-featured man with brown scholarly hair enhanced by square glasses. If any fan of the 'Bleach' anime saw his current appearance, only one name would appear in his/her mind, 'Sousuke Aizen'.
Kisuke : (Forget her, even I am finding my expression creepy, especially my eyes. Ugh, this was the same look 'Aizen' had in the anime when he stabbed his lieutenant 'Momo' in the underground of 'Central 46'. That scene still gives me the creeps. Alright R.O.B, since you made me look like him, I hope you won't mind me using his appearance to my advantage.)
After he made his decision, Kisuke turned away from the mirror and faced Eris. He once again called her while gently patting her head, only this time, he had a gentle smile on his face.
Kisuke : Child, don't be afraid. Everything is fine.
Kisuke whispered these words in a soothing tone. After hearing his voice, Eris started calming down and again looked up to face him, only to be mesmerized by his gentle smile. When Kisuke saw her reaction to his smile and saw that she was blushing a little, he knew that he had successfully calmed her down.
Kisuke : (Good!!! Now I should quickly make her finish the formalities, choose my gift and be on my way to finish the demon king. If everything goes smoothly according to my plan then this work should be a breeze.)
After he made his decision, Kisuke again asked her in a gentle voice whether she was feeling okay or she needed his help ? But, he didn't receive any response to his query as she was still mesmerized by his gentle smile. He realized now that he had underestimated the effect Aizen's smile has on others especially when he is wearing his glasses. In the anime, Aizen was able to fool almost everyone in the soul society with his harmless and gentle smile. Especially the younger generations, whether males or females, no one remained unaffected by his manners.