The Moon Pavilion was a work of Xu Youzhen in the Ming Dynasty. It described the windows upstairs and the scenery of the River Moon Pavilion. The specific poem is: "Zheng Jun's family lives in Baihua Island, and the tall building is a hundred feet high." Come out of the sea at the beginning of the bright moon in the evening. Let's shine on the top floor of the Jun residence first." These poems depicted the scenery of River Moon Tower under the bright moonlight and the windows upstairs.
One key element could be his origin as a human. His human experiences surely had an impact on his demon self. Another might be any significant relationships he had before becoming a demon.
Upper Moon 4's back story could involve a tragic event in his human existence. Maybe he was betrayed by someone he trusted deeply. This betrayal could have been so severe that it pushed him over the edge, and when he was turned into a demon, his new nature was shaped by that past hurt and anger. His actions as an upper - moon demon are likely influenced by the unresolved emotions from his human days.
Wang Quan Fugui and Dongfang Yueyue were both characters in " The Fox Demon Little Matchmaker." Their relationship was that of brothers.
Wang Quan Fugui was the young genius of the royal family, while Dongfang Yueyue was a descendant of the Dongfang Spirit Clan. Wang Quan Fugui and Dongfang Yueyue were both very powerful. They had fought many times in the story of " The Fox Demon Little Matchmaker," and they had won and lost.
While waiting for the TV series, you can also click on the link below to read the original work of " Little Fox Demon Matchmaker " to understand the plot in advance!
Inosuke doesn't become a Hashira in the manga. The story progresses with him having other significant experiences and achievements instead of achieving that specific position.
It's hard to give an exact number. Different story arcs and battles led to the deaths of multiple hashira. Some died heroically, while others met their fate in unexpected ways. The count changes as the manga progresses.