So I'm a Spider, So What?

During what seemed to be an ordinary day, a mysterious explosion occurs and kills an entire high school class. One of the classmates wakes up to find she has been reincarnated in another world as a weak "Nameless" spider-type monster. Quickly escaping from her cannibalistic mother and siblings, she realizes this world functions under RPG logic, only to end up wasting all her skill points on a useless <Appraisal> skill. Wandering the labyrinth for a while, she finds herself increasingly hungry until she finally resorts to cannibalizing the corpse of one of her siblings, which causes her to unlock a mysterious <Taboo> skill, and later manages to kill a poisonous frog by traping it in a web she made. Despite both meals tasting awful, Nameless resolves to survive in this new world. Elsewhere, it is revealed that her classmates reincarnated as well – the fourth prince of the Analeit Kingdom Shun, noblewoman Katia, Shun's pet earth dragon Fei, crown prince of the Renxandt Empire Hugo, saintess Yuri, and the class' teacher turned elf Ms. Oka – and they are all attending magic school with Shun's younger sister Sue. (Source: Wikipedia)