Vol 4: Ch 250 - Jun Tae: R Artificial Intelligence
The family members except for the kids and Tae already knows about Rei's Artificial Intelligence but sometimes they forgot about it because Rei only uses rarely her AI when she can't get any pieces of information or if she's needed the information within an hour duration. Tae also aware of it but he doesn't know about the name of Artificial Intelligence so that's why he answers at the same time with the AI.
Rei: Ah, not you Dear but I'm talking to her.
AI: Yes Mr. Jun, R is talking to me.
Mei: Woah, it's been a long time Jun Tae.
AI: Yes Ms. Mei and you are still beautiful ever since I met you.
Mei: Yup, yup it's must be boring for you to have R, huh.
AI: Yup, yup very boring indeed but I'm still happy that R creates me.
Mei: Ha, ha, that's right, that's right, so now how are you Jun Tae?