Anno Namihei is one of the postmen working on planet Aqua. He was the first person Akari Mizunashi met when she arrived on the planet, and he also carried her, while she was asleep, to the Aria Company upon learning she would start working there. This act of kindness led to a lasting friendship between them, resulting in him borrowing Akari for postal runs when his gondola needed repairs or inviting her to the Redentore festival.
Among his colleagues at Kannarejiyo, Anno is regarded as one of the elders, earning him nicknames like "Elder" or "Ojii-san" and its variations. Akari later learns his real name after becoming a Prima and receiving her first paying customer, Mr. Postman.
On a personal level, Anno is a friendly and good-natured old man, appearing calm and confident. Like most Aquans, he prefers to perform his job at his own pace, ensuring efficiency without rushing. His age does not hinder his performance; he remains capable and diligent. Moreover, he willingly assists others with tasks related to his job, even when it's not required.
(Source: Observations from episodes of Aria the Animation/Natural/Origination.)
