Pros
As students or graduates, Dentsu is a good place where you could start your career. Dentsu has a well-developed and comprehensive onboarding process, and can allow you to learn the industry knowledge to a certain extent. As an intern, your work will not be too stressful and you will have a good work-life balance.
Cons
Some of their clients' requirements are more picky, requiring you to constantly put in repetitive labor, and may not see the expected results.