Quite simply, it's like the relationship between Bick and Goku.
The relationship between future Tranx and future Sun Goku is like the relationship between the main time and space Goku and Bik.
Goku became Bick's apprentice because of special circumstances, and in the future, Tranx became Sun Goku's apprentice because of special circumstances. Neither side has officially taught the other master, Goku is called Uncle Bik, and Tranx is called Goku Brother.
The future Goku's emotional feelings for Tranx are copied from the previous year's Bik to him, although there are not many plots about the future, but you can feel that their feelings are so similar to each other
Goku respects and depends on Bik, and Bik has given his life for Goku.
Future Tranx respects and relies on Goku, and Future Goku gives his life for Tranx.
The only difference between the two relationships is that one becomes an uncle and the other becomes a brother. Nothing more
Substituting the feelings of Bik and Goku into the future of Goku and Tranx is actually a good way to interpret their emotions.
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