What are the touching plot designs in the animation Baisha Aquarium?

The Aquarium in Baisha is a dream trip about two girls' aquariums, which not only maintains the friendship, but also inspires the aquarium. The plot is warm and plain, with warmth and daily life as the mainstay, and the characters and background have maintained the consistent exquisite level of PA Society. Here are some touching plot designs:

1. The old people in Gama Gama Aquarium regard the aquarium as their habitual resting place in leisure. After years of funding, they have taken good care of the animals in the collection and even offered to help clean them up.

2. Haebara Zhimeng, a new keeper from the "Yinhe Aquarium" under construction, came to Ma Jia Ma Jia Aquarium for an internship. Xin acted as her mentor under grandpa's guidance. However, Xin did not agree with the practice of the new aquarium, and regarded Zhimeng as an opponent, testing her again and again.