Is it necessarily the case that Akemi is a genuine pedophile? Because from everyone revealed about him, I think he might be even worse than that.
While child molestation is never justified, you have to admit serious pedophiles have had the bad luck of being born with a pathological sexual orientation. In a sense they're a little bit pitiful, even if they should be kept away from children. However, not everyone who sexually abuses children, or wants to, has an inborn pedophiliac orientation. Judging from how he treats his girlfriend, Akemi sounds more like a control freak, and for many perpetrators sexual abuse is a method of control. It wouldn't surprise me if his lolicon fixation had more to do with a desire for control than simple pedophilia.