Han Li had first met Silvermoon in Chapter 1160 of the Mortal Cultivation Legend.
In this chapter, Han Li arrived at the node connecting the Devil Realm to the Spirit Realm. Daoist Crab opened a path, and Han Li broke through the devil. He brought Daoist Crab and Zhu Guo 'er into the node and entered the Spirit Realm's Wood Clan territory. Along the way, he killed the devils and saved the Wood Clan's people. After learning that the Wood Clan's Mahayana cultivators were heavily injured, he was defeated and waited for reinforcements from various races. Enemies were bound to meet on a narrow road, and Yuan Cha's true body had actually descended upon Han Li. A battle was inevitable. Daoist Crab hadn't recovered his Mahayana stage strength, so the two of them were able to hold their ground. However, Ao Xiao, the only Mahayana stage demon, had suddenly appeared, and Yuan Cha was still struggling against three of them, so he decisively left. Han Li saw Silvermoon, whom he hadn't seen for a long time.
While waiting for the TV series, he could also click on the link below to read the classic original work of " The Legend of Mortal Cultivation "!
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.
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.