I'm not entirely sure specifically about a 'goku pen light novel' as it's not a widely known mainstream light novel. It could potentially be a fan - made or very niche work related to Goku from Dragon Ball. Maybe it's a creative take on Goku's adventures in a light novel format, with new storylines and character interpretations.
Love could be a main theme. The word 'koi' in the title often relates to love in Japanese. It might explore different aspects of romantic love, like unrequited love or the development of a relationship over time.
Finding a 'goku pen light novel' can be a challenge. If it's an official work, it might be available in specialized anime or manga stores that also carry light novels. But if it's a non - official, fan - made piece, it could be floating around on various online communities dedicated to Dragon Ball. You may need to do some deep - diving into fan - created content platforms or ask in relevant social media groups focused on Dragon Ball or light novels. Just remember to respect any copyright laws when looking for such works.
Honestly, comparing the strength of anime Goku and manga Goku is tricky. Both versions have their unique strengths and challenges depicted differently, making it hard to make a clear-cut comparison.
Another option is 'Re:Zero − Starting Life in Another World'. It has a unique plot where the main character has to relive certain events. The world - building and character development are really well - done, and it might be something that readers of 'koi goku no toshi light novel' would enjoy. It has elements of mystery, action, and some romantic undertones as well.
Well, Vegeta would be a likely character. He might be initially suspicious of the female Goku. Maybe he thinks she's a threat or just can't believe there's another Goku - like being. He could be there to add some comical moments as he tries to understand the situation.
In general, it's a bit of a toss-up. The strength of Manga Goku and Anime Goku can vary depending on the specific arcs and battles. Sometimes, it might seem like one is stronger in a particular situation, but that could change in another.