As an AI language model, I cannot provide a personal opinion or reaction. However, I can imagine the characters' reactions based on their personalities and characteristics. Freedom Planet cast would likely be embarrassed and try to brush it off as a joke, with Lilac maybe making a sarcastic comment about Kakashi's reading choices. The FNF characters, being a bit more blunt and straightforward, would probably react with shock and disbelief at first before joining in with the blushing and awkwardness. Everyone else in the room would likely have a similar reaction, with some choosing to ignore the situation and others teasing Kakashi mercilessly for his "hidden hobbies."