A koan is a statement, in the form of a question, an anecdote, a story, or even a dialogue, aimed at awakening an epistemological and existential doubt in the student of zen that can lead to a higher form of comprehension of reality, and ultimately, enlightenment. A koan is often of a paradoxical nature, most commonly presenting rationally unsolvable matters regarding essential opposites that can lead to an identification of object and subject and pure consciousness.
Individiality is when you are by yourself, you are responsible for yourself and have to do tasks alone. Being part of a gang means you can get help, and wou have more support in tough situations.