18 titles the community recommends if you enjoyed The Qwaser of Stigmata.
Valkyrie Drive: Mermaid
Manyu Scroll
High School DxD
To Love Ru Darkness
The Testament of Sister New Devil
Val x Love
Queen's Blade: The Exiled Virgin
Seven Mortal Sins
Prison School
Demon King Daimao
The Testament of Sister New Devil BURST
Sekirei: Pure Engagement
