Experience Tumblr Like Never Before
Since the New Bark Town kids are out of the way, I figured I'd do some basic worldbuilding stuff before we start covering more characters. There's more I'll cover later on, but to start off with, let's go over the general culture of Johto!
As a whole, the people of Johto lean towards more "traditional" values such as putting family first, a sense of obligation towards their communities (national pride/patriotism is very strong in older populations), an emphasis on respect towards elders, etc.
That being said, Johtonians are also very private---typically, what happens behind closed doors stays behind there for better or for worse. That doesn't mean people aren't extremely nosy, just that they wouldn't actively disrupt the public peace with their gossip.
Joint families are the most common form of family unit, though nuclear families have become more prevalent in cities such as Goldenrod due to limited living space. Houses tend to consist of one main living space (usually living room/kitchen/dining room combined) with bedrooms and bathrooms accessed through either a side hallway or a second floor. Sometimes (usually in downtown areas), a family business may be on the first floor while living/private spaces will be located on the second floor.
Similarly to Sinnoh, Johto's history is considered very important and conservation efforts are taken very seriously across the region. However, those efforts are mostly aimed towards preserving current knowledge instead of actively discovering the past, meaning there is still information that gets forgotten and lost to time.
Due to this (and also because of the burning of Brass Tower), Ho-Oh receives much more reverence than Lugia. Before, they were considered the twin guardians of the region and protected the balance between people and pokemon, but now, Ho-Oh has been deified while Lugia is sidelined and nearly forgotten.
Johtonians have a very distinct accent, mostly since they're a bit more secluded compared to other regions. Goldenrod and Saffron City residents have a stronger mix of Johtonian and Kantonian accents mostly due to tourists and commuting workers on the Magnet Train.
Johto exports a large amount of artisanal and handmade goods, especially woodcrafts such as cabinets or other large furniture (it's much more heavily wooded compared to other regions), but the region also has a very successful maritime industry that could almost rival Hoenn's.
Johtonians receive their ID card on their 13th birthday. At that point, they may opt in to take the gym challenge. If they do, they will receive a trainer card that contains information pertinent to the gym challenge on the back, which is then updated with every gym the trainer beats. They will keep the same ID their entire life regardless of whether they complete the challenge.
On a similar note, the age of majority is 20, which is a bit older than most other regions (Sinnoh/Kanto are 18, Hoenn is 17, etc etc.)
Children typically get their first pokemon (also referred to as their starter pokemon) at a very early age. This is to help teach them responsibility and respect for pokemon, and it provides them protection when they're unsupervised.
Public schooling is free up to 13 years age, at which point they can choose to pay to go to secondary school, take a break to go on a pokémon journey and take on the gym challenge, or quit altogether.
Far more often than not, children will take about a year to go on their journey and then go back to school. Upon their return, they generally have the option to skip certain classes (both the ones they missed and future classes) if they're able to put together a decent report detailing their experiences and what they learned on their journey. If not, they may have to catch up and even be forced to graduate a year later than their peers.
Nontraditional scenarios include students returning from their journey earlier or later than a year, students going on their journey and not returning to school, or going on their journey/dropping out of school at older than 13 years (there is technically no upper age limit at which the gym challenge can be started).
Crime rates are pretty low (especially major crimes such as assault, burglary, kidnapping etc.), which is part of the reason why children are allowed to roam the region unsupervised. This is mostly due to heavy restrictions on which/how many pokemon are legal to own, with and without certain permits. Additionally, the maximum number of occupied pokeballs a person is allowed to carry at once is six, although the average person will own at most three pokemon. Such laws are common in other regions, but Johto is more strict about their regulations.
Additionally, since taking care of children is often a community undertaking ("it takes a village to raise a child"), many adults will keep a close eye on nearby kids and keep them out of trouble regardless of whether they're related.
Honorfics are pretty much mandatory, the more so the younger you are. In a casual context, everyone older than the speaker is refered to as Aunt/Uncle no matter their actual age or relation. However, this can be seen as rude if said to someone of a similar age to the speaker. When speaking to strangers and/or people of an unknown age, it's safe to just refer to them as Ma'am/Sir. Grandma/Grandpa is a highly respected honorfic and is reserved for family-use only unless the speaker is invited (the same goes for Mom/Dad, just to a less strict degree). There are other honorfics in common use, but they're usually used in workplace/formal contexts (such as refering to coworkers, public employees, and even hosts if you're staying at someone's home).
Since traveling trainers can’t hold down a steady job, a common way to earn money is just to pop into local businesses and ask if they need help. It’s not guaranteed to work, but most businesses will either find something small for them to do or recommend a different business to ask.
Hospitality is a huge source of pride for most households, especially out in rural areas. It doesn't matter if the visitor is family or a complete stranger, they're to taken care of to the absolute best of a household's abilities. In return, guests treat their hosts with the upmost respect and will often leave tokens of their gratitude. (it's not uncommon for trainers to randomly show up at your door looking to spend the night if you live out in the middle of nowhere)
Live performance tends to be the most popular form of entertainment across the region, including traditional/ceremonial productions, theater, and music. Historical enactments are also very popular during festivals. This is in part because oral storytelling used to be the region's main form of chronicling its history. (There are a few exceptions, such as the Dragon's Den containing extensive records of the Dragon Tamers and the local area, but unfortunately, access to those records is generally very limited.)
Slowpoke tails are somewhat of a local delicacy, but because Slowpoke farms are few and far between (there's strict laws on humane treatment such as how many Slowpoke can be kept on one farm, the space and amenities required to keep them, harvesting methods, etc.), they tend to be quite expensive and typically have to be sourced from the farms themselves. Trying to export them in large enough quantities is even more expensive, especially before the shipping methods are modernized, so for a long time the tails remain purely a Johtonian cuisine.