Eluvei said:
For the sake of comparison I checked out the similar sequence from volume 6, where Casca wakes up nude and attacks Guts in a comical manner, and the panel she realizes she's exposed never did, and still doesn't, appear fanservicey to me.
That shot of Casca is actually more suggestive, as far as I'm concerned. But I agree, it's not "fan service". In fact, "fan service" is a misnomer in this entire conversation, no matter how you cut it. It simply has the wrong connotation.
Eluvei said:
She's just sitting there blank-faced. In Schierke's case, we're "forced" to look at her butt, which I don't think is a stretch to say is the only thing in the foreground, and then her tiny blushing face.
Actually, the previous page elaborately sets up that moment, which is pretty typical of how Miura sets his jokes up. Schierke, having managed to thwart Isidro's attempts on peak at the ladies bathing, is complaining about how Casca just won't listen to anything. Ivalera tells her to just use magic, but Schierke insists that she can manage everything just fine without it. Here the scene is a continuation of the trials and tribulations of Schierke as a witch prodigy in a city of humans, a world that is foreign to her. That section of the story shows her to be vulnerable in unusual and unexpected ways, while she had been introduced as being a formidable character despite her young age. So formidable that Isidro had felt devalued to worthlessness by comparison. This process serves to humanize us and make the reader emphatize with her, despite her sometimes haughty attitude. It is also a way to show that despite not looking like much, Farnese's contribution to the group did matter.
Anyway, as Schierke is telling Ivalera she can do it, Casca grabs her towel (as Schierke had been doing with hers) and spins her around in a funny way. Now we have a very classic "dramatic sequence" as Miura does them: we see Schierke fall face first into something (but we don't know what), then we have a shot of her as she turns to admonish Casca, and finally a close up on her face with a sweat drop as she pauses. That last shot is the internal realization of the character that something's wrong. That whole sequence is setting up the following panel, which is the reveal that she's sprawled butt-naked on top of Guts. The panel after that is the light flashing out of the window, then her red-faced self and smoke rising out (from an unknown source). Then there's the close-up of her embarrassed face, her covering herself and finally, charred Guts and his thoughts.
Literally everything in that sequence of panels is designed to serve the purpose of the joke (and of the themes I highlighted above). The fact her butt is at the foreground is meant to reinforce how embarrassing the situation is to her, adding weight to the scene.
Eluvei said:
In a vacuum I'd still see that panel and think it's something that can only be seen as perverted due to the pose alone, but that's unfair to Miura.
To go back to your comparison with Casca, since Schierke's still a kid, she doesn't have breasts. Therefore her nakedness has to embarrass her differently, and to show her rear-end is logical in that regard (because the front would just not be Ok). You mention the pose, but it's not like she's arching her back or something, she's lifting herself from a prone position because she just fell down.
Man, I never thought I'd ever have to talk so long about this specific panel. That's not exactly what I have in mind when I think of discussing Berserk.