Characters use stuff like dildos, vibrators, plugs, and other gadgets to get themselves warmed up or to push the stimulation way past what fingers can do. Panels usually linger on the toy pressing in, buzzing against the clit, or stretching an ass with lots of lube, often leading into fucking and a messy cum payoff. Censorship typically covers the actual insertion point, but the poses and sound effects make it clear exactly what’s happening.