Seraph Ascent 2: Route J 7-13 (Pixiv Fanbox)

Sudden weakness overcomes her as she feels her mana being absorbed, flowing into the mud... It then promptly swallows her up, pulling her under the surface so deeply that it feels like nobody will find her... The coils tighten and continue attacking her most vulnerable areas, keeping her in a submissive and helpless state...

However, the bubbling and gurgling from under the rock seems to have attracted someone's attention...?

(Next, we'll be seeing what would've happened back in Route I: The Sprawling Trees!)