krishna killed narakasura

1.krishna killed narakasura, when narakasura used shataghni given by brahma on krishna, off-course the shataghni can't do any harm to krishna but as a maintain respect towards brahma's boon, krishna was hit by it, krishna appeared to be uncautious in the mean time satyabhaama used shaaranga dhanus and fought with narakasura making him helpless later krishna used sudarshana chakra and killed narakasura. satyabhama fought and krishna killed narakasura.
2.kusha and  lava are the names of shishyas of valmiki rushi, they chanted ramayana before all rushis and sri rama in rama's yagna. the reason behind their names is valmiki rushi used darbha and made balaraksha to the twins eldest kush was used the top part of darbha which is called as kushamu and to do raksha to the younger one lava was used the lower part of the darbha which is called as lava, so the names kusha and lava were named to the sons of sri rama and sita
नरसिंहाचार्य सुळिभावि
मठाधिकारि,
गुंटूर, उत्तरादिमठम्
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