The new character Sandra is voiced by Yui Ogura in "I've Been Killing Slimes for 300 Years and Maxed Out My Level: Season 2".

It has been announced that Yui Ogura will voice the new character Sandra in the upcoming TV anime series "I've Been Killing Slimes for 300 Years and Maxed Out My Level: Season 2." Alongside this announcement, the first key visual and the second teaser trailer have been released.

For this season, a special promotional strategy was used, where the teaser image released in March was gradually updated with additional characters to build anticipation for the broadcast. The first key visual now features the familiar characters from the first season—Azusa, Laika, Falfa, Shalsha, Halkara, Beelzebub, Flatorte, and Rosalie—alongside the new character Sandra by Azusa's side.

The anime "I've Been Killing Slimes for 300 Years and Maxed Out My Level" is based on the light novel by Kisetsu Morita. The story follows office worker Azusa Aizawa, who dies from overwork and is reborn as an immortal witch in another world. The first season aired from April to June 2021. The second season is scheduled for 2025.