My Dress-up Tiger

It is the day of Ryuuji's birthday, but after an intense argument between him and his girlfriend, he and Taiga are on the rocks. Problem is, Ryuuji doesn't know why Taiga is so mad at him. Will Ryuuji figure out why the palmtop tiger is so upset, or may Taiga surprise him with something he isn't expecting? Also, what does Taiga seem to have against Marin from My Dress-up Darling?