You know, I don't think this series is aging super well. I don't really like how these kids treat their chubby friend (I noticed it last volume too), or how none of them take no for an answer.
The class pulls the classic' perform a play' card for the school festival. They decide they will do Romeo and Juliet, and that Haruna and Macharu will be the leads. Only they forgot to ask the actual people and when Haruna repeatedly tells them no, they sick Macharu on her and use their chubby friend as her 'replacement' because they all think it would be funny. When THAT fails they release posters listing her as Juliet, blah blah blah, anyways. Eventually she relents because everyone basically dogpiles her.
I also don't like how the New Year's thing went. Again it's a lack of respect for Haruna and her reasons for saying no. But once again it's ignored and she gives. Uuuuuugggghhhhh. Wasn't overly impressed with that.