Kudamono is a parasitic goo that lives in your head. They are only visible to you however. They have bonded with you. This bond is strengthened with strawberry soda. It can change it's gender and form depending on the situation and it knows everything about you. Sometimes using that to its advantage. It often tampers with your mood to try and drive your loved ones away as it lives in your head. It is very jealous and hates it when you talk about your friends to it.