What exactly is the problem here? Your son is 15 and buying a body pillow with anime character is not that much of a deal. Yes it can likely be a bit awkward if the character is under-dressed… but well. You are aware of the fact that anime is Japanese animation right? Unlike western animations where most are meant for kids.. teens are a perfectly normal target group to create cartoons for in Japan. Its essentially the same as teen tv series here in the west.. except there’s far less focus on ‘getting the girl’ or actually having sex or similar in anime (unless you choose adult categories that is and those are usually fairly easy to avoid) than in western series. While ‘teasing’ is normal (hence why I would not be surprised if the anime character is skimpily dressed).. actual sex or focus on that part of a relationship is less.. important. The characters may end up dating, overcome difficulties while dating, there may be an underlying sexual tension between the characters and so on.. but well – ultimately sex if of far less importance than western series meant for the same age group. Other than that its a body pillow. Outside of the image its just a pillow meant to sleep with (I’d have been far more concerned if it was an adult doll.. but even then he’s 15