"about math, research papers, science"

"西瓜身上插着一把刀"

"The dragon in the "Dragon Ball" manga is huge, all green in color, and can only be summoned with seven crystal balls composed of dragon balls"

"cheerful princess in a sparkly dress"

"Ghostly carriage"

"Sorcerer with an enchanted staff"

"Mermaid with coral"

"Ninja with a grappling hook"

"Viking longship with oars"

"Mermaid with sea creatures"

"Spaceship cockpit view"