One possible fanfiction could be about Tien and Yamcha teaming up for a special training session. They might start off with some friendly sparring, showing off their unique martial arts moves. Tien could use his multi - form technique, while Yamcha demonstrates his Wolf Fang Fist. As they train, they start sharing stories about their past battles and how they've grown as warriors. Eventually, they come up with a new combined attack that could be used against future threats.
They could be part of a detective story within the Dragon Ball Z universe. Tien and Yamcha are hired to solve a series of mysterious disappearances. They start by interviewing different characters, like Bulma for any technological insights or Goku for any leads from his adventures. As they dig deeper, they find that the disappearances are linked to an ancient evil that was thought to be sealed away long ago. Using their martial arts skills and wits, they try to track down the source of the problem and put a stop to it.
There's a fanfiction where Tien and Yamcha are transported to an alternate dimension. In this dimension, they have to fight against versions of themselves that are evil. It's a really cool concept as it explores different sides of their characters and how they deal with seeing their own dark counterparts.
There are no such inappropriate 'Straight Shota' stories in the official Dragon Ball Z canon. Dragon Ball Z mainly focuses on epic battles, power-ups, and the adventures of Goku and his friends to protect the Earth from various villains.
You can start by looking on popular fanfiction websites like FanFiction.net or Archive of Our Own. There are often many 'Dragon Ball' - related fanfictions there, and you can use the search function to specifically look for ones that feature Tien and Yamcha.
One alternative is to focus on character backstories. You could write about the early days of Piccolo, how he came to be the way he is. Another option is to do crossovers with other non - sexual universes. Maybe a story where the Dragon Ball Z characters meet characters from a magical anime world and they have to work together to solve a problem. Also, you can write about the relationships between the characters in a platonic way, like the deepening of the friendship between Gohan and Krillin.
A Kryptonian in the Dragon Ball Z universe could potentially be a very powerful addition. Their natural abilities like super strength, flight, and heat vision could make them a force to be reckoned with. However, they would also face challenges as the Dragon Ball Z world has its own power scale with ki-based powers. They might have to adapt to the different fighting styles and power sources. Maybe they could learn to use ki in addition to their Kryptonian powers, or they could find a way to combine the two in unique ways.