Rikka is a ninja descendant. Her grandfather Hyoe is the last chief of their ninja clan and her father is a cyborg researcher. Both are killed when a weapons' company raids his lab to use his research. Rikka sets out
NiNoKuni
Pale Cocoon
Fate/Grand Order: Himuro no Tenchi - 7-nin no Saikyou Ijin-hen
Dr. Nicholson and the Blue Diamond