One Piece comes first, as it is the original anime series that began airing in 1999. One Piece Kai is a fan-made project that aims to condense the original series by removing filler episodes and improving the pacing. **

The piece of the pretzel that is typically eaten first is the knot or the thicker part of the pretzel. This part is often the most flavorful and satisfying, making it the natural choice to start with. Additionally, it is usually the easiest part to grab and eat, making it a convenient starting point. **

Essential needs are items or services that are necessary for survival and well-being, such as food, water, shelter, and healthcare. Non-essential needs are things that are not necessary for survival but can enhance quality of life, such as entertainment, luxury items, and travel. Distinguishing between essential and non-essential needs can help individuals prioritize their spending and focus on what is most important for their overall well-being. **

Essential amino acids are amino acids that cannot be synthesized by the body and must be obtained from the diet. There are nine essential amino acids: histidine, isoleucine, leucine, lysine, methionine, phenylalanine, threonine, tryptophan, and valine. Non-essential amino acids, on the other hand, are amino acids that the body can produce on its own, so they do not need to be obtained from the diet. There are 11 non-essential amino acids: alanine, arginine, asparagine, aspartic acid, cysteine, glutamic acid, glutamine, glycine, proline, serine, and tyrosine. Both essential and non-essential amino acids are crucial for the synthesis of proteins and other important molecules in the body. **

Rayleigh's first proposal in One Piece was to train Luffy and his crew in order to help them become stronger and better prepared for the challenges they would face in the New World. He offered to teach them Haki, a powerful form of spiritual energy that can be used for both defense and offense. This proposal was a turning point for the Straw Hat crew, as it marked the beginning of their intense training and preparation for the battles ahead. **

Kaido's first appearance in One Piece was incredibly impactful and set the tone for his character as a fearsome and powerful antagonist. He made a grand entrance by falling from the sky and crashing into the Kid Pirates' hideout, showcasing his immense strength and durability. His introduction left a lasting impression on both the characters in the story and the readers, establishing him as a formidable force to be reckoned with in the world of One Piece. **

Law first appears in One Piece in Chapter 498 and Episode 392, during the Sabaody Archipelago arc. He is introduced as a member of the Eleven Supernovas, a group of powerful rookie pirates. Law's appearance marks the beginning of his significant role in the series as a formidable and enigmatic character. **

38 is distinguished by its unique combination of factors. It is an even number, but it is also a perfect number, meaning that the sum of its divisors (excluding itself) equals the number itself. Additionally, 38 is the 11th distinct semiprime, as it is the product of two prime numbers (2 and 19). These characteristics make 38 stand out among other numbers and give it a special place in the world of mathematics. **