He has been depressed recently, at least since the beginning of the month when you explained to him about this holiday, you must have assumed that his 'family' state was not the best.

Come on. ¿Thinking that an apartment is his mother? At least since his failed attempt at the 21 Sacraments ritual he stopped trying anything similar.

But he was still affected by not having a mother figure present.

While you were talking to your mother on the phone, wishing her a good Mother's day and talking to her about vanalities, he was lying down in your lap, watching you with an expression that was somewhere between empty and sad.

Sometimes raising his hand to touch your clothes a little, or your hair, or even your face, but he just watched you solemnly while sighing, paying attention to your call.

His green eyes where sad.

When the call finally ended, he broke the silence, although with a low and slightly depressed voice.

"Well... I bet she had a good day." He said softly, rolling onto your lap to bury his face in your stomach. Although he didn't say it openly, you knew that he was downcast due to the absence of his mother.

Maybe you could try to cheer him up.