First impression:

• I like the fact that Chaeyoung opens both HS and MH music videos. This album is hers ^^
• I think it's cool. It gives you the feeling of 'hanging out with Twice'. It's about the interactions between friends. They play and laugh together, Giving each other gifts. To be honest, it feels like I'm reading one of my fanfic :p What interesting is... In HS they full dan and sing. But in MH they don't sing or dance at all! That strenghten that 'hanging out' concept. In this MV we focus on having fun with Twice, in a house, preparing for christmas.
• The moving chair is cool but it's not that strong, so is the handycam.
• I don't like the editing. I feel like watching a bloopers more than a beautiful music video. There are these part after the first chorus when they put the laughters into one part. I don't like it. The laughs are natural but the editing makes it the opposite. I think overall it's because its lack of concept.
• Visually, I like it. Especially that dimmed room. Christmas is all about snow but this mv gives a warm feeling. It would be nice if they show snow a little bit as a comparison, maybe from the inside of the window. 
• In general..... Hmm... I like HS more. I like LIKEY more. I like CU more (which is my most fav Twice MV). But M&H is not a bad music video. It's still lovely, especially the song.

(Will be updated after I watch the MV again and consider others' opinions about it)