In my opinion, both have their merits. The anime has great animation and sound effects, while the manga allows for deeper exploration of the characters and plot. It really comes down to personal taste.
I'm not entirely sure specifically about 'Nazo Drama' as it could be a relatively unknown or niche concept. It might be a specific type of drama from a particular region or with a unique style. Without more context, it's difficult to provide a detailed full story.
The 'convoy true story' might also be related to a civilian convoy. For example, it could be about a group of vehicles traveling together for a specific purpose like a long - distance migration, a relief effort in a disaster - stricken area. There could be stories of cooperation, survival, and the relationships among the convoy members.
The 'convoy graphic novel' could potentially revolve around a group of characters who are part of a convoy. Maybe it tells the story of their journey, the relationships between them, and the events that unfold as they travel together. It could also include elements of adventure, like facing bandits or surviving in harsh weather conditions. For example, the convoy could be on a long - distance trek through a post - apocalyptic landscape, and the graphic novel details their struggles and triumphs.