Exactly 100 days ago, after 70 years of dedicated service, Queen Elizabeth II died at the age of 96. And as the world mourned her passing, her grieving eldest son Charles had to step up to fulfil his destiny.
He officially became King Charles III and it is believed his team earmarked the first 100 days of him being on the throne as crucial to setting the tone for his reign.
But it's fair to say the new monarch has not always had an easy ride in his first three months in charge.
Not only was a large in-tray thrust upon him, he has also had to deal with a number of unexpected issues, many he would not have been able to foresee...
Pengate
Less than 48 hours after becoming monarch, Charles attended a meeting of the Accession Council, where he was officially proclaimed King.
The historic meeting was televised for the first time ever, and he was spotted grimacing when a pen tray got in the way of him signing a document and he beckoned an aide to move it.
But that wasn't the end of his frustrations when it came to stationery as just days later in Northern Ireland he was caught in another clip, which went viral.
He was recorded getting agitated by a leaking pen and was heard snarling: " "I can't bear this b****y thing ... every stinking time!"
Thankfully, several weeks later, after the end of royal mourning, he managed to see the funny side of his pen troubles.
During a visit to Dunfermline, he and the Queen Consort were invited to sign a visitor's book, with the King appearing to use his own pen.
And after handing it to Camilla, he appeared to reference the pen dramas by smiling and appearing to say: "These things are so temperamental."
Political turmoil
In one of his mother the late Queen's final duties as monarch just two days before her death, she formally invited Liz Truss to become Prime Minister after the resignation of Boris Johnson.
This meant that Ms Truss became the first PM that Charles held weekly audiences with as King.
And it seems it will always be remembered for the King's stinging comment to Ms Truss, who was under intense political pressure at the time.
As she was escorted into the room where she was to have the audience with Charles, the former Tory leader could be seen carrying out an awkward curtsey, before shaking hands with him.
And he remarked: "Back again? Dear oh dear."
Meanwhile, it would have been assumed that because his late mother appointed Ms Truss just days before Charles' accession, it would be a duty he would not have to worry about in the early part of his reign.
However, after Ms Truss quickly lost the support of Tory MPs, she was forced to resign after just 44 days in 10 Downing Street - making her Britain's shortest-serving Prime Minister ever.
And just weeks into his reign, Charles had to oversee Ms Truss' resignation before formally appointing her successor Rishi Sunak as PM.
However, it appears that Charles broke one of his mother's long-standing traditions when it came to her Prime Ministers during his appointment of Mr Sunak.
Over the years when meeting PMs at Buckingham Palace, the late Queen would nearly always meet them in the audience room at Buckingham Palace - a room filled with cosy furniture and family pictures.
However, Charles opted to meet Mr Sunak in the 1844 Room at the palace, which the King also used to meet dignitaries in the first few weeks of his reign.
Two egging incidents
During his early reign, the King appeared to be keen to get out and about and meet as many people as possible.
But in recent weeks, two of his walkabouts have been marred by egg-throwing incidents.
The first came in November when eggs were thrown at him and Camilla as they visited the city of York.
The royal couple had just arrived in the city to unveil a statue in honour of the late Queen at York Minster when a figure in the crowd threw four eggs, all of which missed.
Then just weeks later, police confirmed they had charged a 28-year-old man with a public order offence after an egg was allegedly thrown at the King during another walkabout.
Bedfordshire Police refused to disclose the name of the suspect following the incident outside Luton Town Hall.
Harry and Meghan's explosive Netflix series
The relationship between Charles, his youngest son Harry and his wife Meghan has long been rocky.
Even before he became King, Harry hit out at Charles during his interview with Oprah Winfrey, accusing his dad of cutting him off financially.
And in recent days Harry and Meghan ramped up their attacks on the Royal Family in their explosive Netflix series.
In it, Harry accused the royals of having a “huge level of unconscious bias” and Meghan said the media wanted to “destroy” her.
The duke also said members of his family questioned why Meghan needed more protection from the media than their wives had been given, but that they failed to grasp the “race element”.
Meanwhile, he also went into detail about what happened at the Sandringham Summit and said his dad did not tell the truth.
There has been no official response from Buckingham Palace about the series so far.
The Crown
However, it is not just one Netflix series that has posed difficulties for Charles - the streaming platform's hit series The Crown also returned for a bombshell fifth season.
The latest series focused on the early 90s and the breakdown of the now-King's marriage to Princess Diana and his relationship with the now Queen Consort.
The show also faced a barrage of criticism over a scene which saw Charles, then Prince of Wales, plotting with former Prime Minister Sir John Major to persuade his mother to abdicate, which was branded as fiction.
A spokesman for the former PM said: “Sir John has not cooperated – in any way – with The Crown. Nor has he ever been approached by them to fact-check any script material.
“Discussions between the Monarch and Prime Minister are private and – for Sir John – will always remain so.”
However, Netflix said: "The Crown has always been presented as a drama based on historical events.
“Series five is a fictional dramatisation, imagining what could have happened behind closed doors during a significant decade for the royal family – one that has already been scrutinised and well-documented by journalists, biographers and historians.”
Race row
Another issue that Charles had to contend with last month is a race row that engulfed the palace.
It came following a royal aide allegedly asking a black British visitor at Buckingham Palace: "What part of Africa are you from?"
Ngozi Fulani, who runs a black women's domestic abuse charity, claims she was questioned about her ethnicity by Lady Susan Hussey.
The 83-year-old was one of the late Queen's most trusted aides and is Prince William's godmother.
An investigation was launched and the palace said they were "unacceptable and deeply regrettable comments". She has now resigned from her honorary role as Lady of the Household.
