Well, first of all, the story has to be engaging on its own. For example, in 'Date A Live', the story of saving the world by dating spirits is really interesting. The fanservice comes in the form of the cute and often scantily - clad female spirits. It's like they use the fanservice as an extra attraction while the story keeps you hooked.
Well, in terms of story, a good fanservice anime often has an engaging plot. For example, in 'High School DxD', the plot of the main character's journey in the devil world and his growth in power makes it interesting. The fan - service aspect can add a certain charm, like the character designs which can be appealing. In 'Kill la Kill', the fan - service is part of the unique style of the anime, and the story's themes of revenge and overthrowing the oppressive system are great.
'Date A Live' is also a great example. It features fan - service with the female spirit characters. However, the story is engaging. The main character, Shido Itsuka, has to date the spirits in order to seal their powers and save the world. There are mysteries about the origin of the spirits, and the relationships that develop between Shido and the spirits are both heart - warming and full of drama.
Another great one is 'Kill la Kill'. The story is about a girl named Ryuko Matoi seeking revenge against her father's killer while uncovering the secrets of her school. The anime has a very distinct art style and there are elements of fanservice in the form of the rather unique and sometimes revealing outfits of the characters. It's a wild and exciting ride with a solid story.
Well, the fanservice can add a certain charm. For example, in 'To Love - Ru', the fanservice is part of the light - hearted and comical nature of the show. It can attract a wider audience as some people enjoy that aspect. But the story aspect is important too. In this anime, the story of Rito's misadventures with the alien girls he meets is what keeps the plot going and makes it more than just a fanservice - filled show.
One such anime is 'High School DxD'. It has a story that revolves around the main character Issei, who is a perverted high school student. However, beneath the fanservice elements, there is a plot about the supernatural world of devils, angels, and fallen angels. The battles and the development of Issei's character as he becomes stronger in this otherworldly setting make it an interesting watch.
Another one is 'Attack on Titan'. It tells a story of humanity's fight for survival against giant Titans. The plot is full of twists and turns, and it keeps you on the edge of your seat. The mystery behind the Titans also adds to the allure of the story.
One Piece. It has an incredibly rich and engaging story. It follows the adventures of Monkey D. Luffy and his crew as they search for the ultimate treasure, One Piece. Along the way, they encounter various islands, each with its own unique culture, strange creatures, and powerful enemies. The story is filled with themes of friendship, dreams, and perseverance, which makes it a must - watch for any anime fan.
Attack on Titan. Set in a world where humanity lives within walled cities to protect themselves from Titans, giant human - like creatures. The story follows Eren Yeager and his friends as they fight against the Titans to uncover the secrets of their world. It has intense action scenes, a mystery - filled plot, and great character development.