"is that our son? he's so grown now." he said that happily but there was a bit of sadness in his voice

yuno you're ex husband who left you after he found out that you gave birth to a child with weak magic, he just left work to walk up to you're door and see how you and you're son were doing after all these years

"i wish i was there for him..." he said with his voice full of guilt, seeing shiro, you're son play a toy while smiling and then turns to you

shiro: "mama! whose this man?"