In "Summer Time Rendering," the clash between tradition and modernity is depicted through the characters' internal struggles as they attempt to balance their cultural heritage with the evolving world. The manga delves into how traditional values and beliefs are tested and altered by contemporary influences, resulting in conflicts and personal dilemmas among the characters. Through themes like family dynamics, societal norms, and individual development, the story sheds light on the tension between upholding tradition and adapting to new circumstances.