The Indus river flows into the Arabian Sea, to the west of the Indian Peninsular, or in a wider sense, it flows into the Indian Ocean.
yes it does flow south
The Arabian Sea
Northeast
Pakistan
asia
Yes
Pakistan
Yes
which sea or ocean does the river yensei flow into
The Indus River flows South due to the gravitational pull of lower land nearest to sea level, into the Indian Ocean, or in simple terms, the Indus River flows South since the mountains are North and rivers flow down mountains to the seas or lakes. (Please do not judge grammatical errors made in this answer or any additional spaces I accidentally placed by mistake)
The Indus River flows from North to South, to the Bay of Bengal