
Out of the four, Little Mo is the only one who is helping his mother. He is trying to help his mother with the household and the money while it's completely the opposite for He Tian. Little Mo never had friends with whom he was that close so opening up would be difficult for him. He is the type to keep everything bottled up so you can't except him to tell everything to He Tian like "I lost my job so stop bothering me".
You should also try to understand him instead of only trying to understand He Tian. Mo also has feelings

Yunifer is the person who has a great impact on him and made him someone better who "likes him for who he is" cause y'know Ishid used to hate his power but now he is confident to make Yunifer feel the warmth so he likes his power more. She is patient, caring and understanding. She forces him to do good things and not the bad. She treasures him and treats him as the most precious thing that she ever has so. I love their healthy and wholesome relationship
I want a guy like him in the future. But I don't want a real person. Agh I know I'm complicated and all but at least give me a cosplayer. Amen
Same