Titles featuring powerful fiends bound to human masters frequently top popularity charts. Audiences enjoy the escapism of gaining a powerful, fiercely loyal ally, combined with the strategic element of managing a dangerous, unpredictable supernatural force. The "hot" appeal of these stories stems not just from the visual designs of the characters, but from the raw, unfiltered emotional intensity of their bonds. Conclusion

The Testament of Sister New Devil ( Shinmai Maou no Testament )