ライバルが増えすぎてチョコレートを渡せずに部屋に持ち帰って独り食べながら「あ、このチョコおいしい...自信作」とか感想を述べるオイゲンちゃんを幻視するのは精神(こころ)がもう息苦しい

My soul feels suffocated from visualizing Eugen-chan who came back to her room with the chocolate that she couldn't give because there were too many rivals from before. While eating alone, she made remarks like "Ah, this chocolate is delicious... My pride and joy"