The word 403 usually referred to a special font, also known as "death font","crash font", or "erotic font". This type of font is designed to cause discomfort and fear in the reader. It is usually written in bold, bold, black, or colored font.
This kind of artistic word was usually used in novels, comics, animations, and other media to express the character's personality characteristics and create an atmosphere. When creating, the author could design this font according to his own creativity and preferences, and add some unique elements to the work to increase the artistry and interest of the work.
I'm not sure specifically as there could be many novels with this title. It might be about a relationship where the characters are bound to each other in some way, perhaps by fate, love, or some other strong connection.
I'm not sure specifically as I haven't read it. It could be about a relationship where the characters are bound to each other in some way, perhaps by a promise, a shared destiny or an emotional connection.
A spell was a type of magic charm that mobilized the magic power of the magic world and was completed by chanting an incantation. Expecto Patronum was one of the most famous defensive spells in the Harry Potter series. It could be used to ward off dementors. Avada Kedavra was a black magic killing curse that could instantly kill a target. Other spells such as the Permanent Sticker Spell, the Bat Spirit Spell, and the Eye Spell also appeared in the Harry Potter series. For the specific explanation and usage of spells, you can refer to the Harry Potter series of novels or related encyclopedia pages.