Apne kaam khatam karne ke baad laxman ji apne mool roop mai chal gahe that is SHESHNAAG and lord rama took samadhi in river SARAYOO

Normal death.
after death of lakshman,Ram divided 'kosal' amongst his two sons lav and kush and died at the age 80

Well..rama never remarried..took care of lav n kush..n wen they came of age..made them kings...together they set up the suryavansham.
abt lakshman..theres no news actually..coz i think after coming frm vanvaas he liked to lead a secluded life..so he never gav any " dhaasu" public appearances..n well..rama must hav given him a fair share too..so he never had a scope to complain..:))

Truth is bitter but they Both committed suicide.

They died a common man's death.

Rama's life and journey is one of perfect adherence to dharma despite harsh tests of life and time. For the sake of his father's honour, Rama abandons his claim to Kosala's throne to serve an exile of fourteen years in the forest. His wife, Sita and brother, Lakshmana being unable to live without Rama decide to join him, and all three spend the fourteen years in exile together. This leads to the kidnapping of Sita by Ravana, the Rakshasa monarch of Lanka. After a long and arduous search that tests his personal strength and virtue, Rama fights a colossal war against Ravana's armies. In a war of powerful and magical beings, greatly destructive weaponry and battles, Rama slays Ravana in battle and liberates his wife. Having completed his exile, Rama returns to be crowned King in Ayodhya (the capital of his Kingdom) and eventually becomes Emperor of the World,[9] after which he reigns for eleven thousand years an era of perfect happiness, peace, prosperity and justice known as Rama Rajya.

After the war ended and once again Sita was banished to forest, then Luv and Kush born , they were brought up to Kausalya. and Sita gone to prithvi log and then went and lived in Vaikunth waiting for the Lord to returh. When everything is over and done with and Lord came to the conclusion it is the time for them to go. hence, first Lakshman went to sarayu nadhi and from there, his form has disappeared and Lakshman in the form of Adi Sesh went to Vaikunt and after some times, Ram has also done the same , his form also disappeared and Lord went to his original abode and united with Adi Sesh and Mahalakshmi,( but no body knew how Bharath and Shatrugun made their exist in this world.) leaving Luv and Kush to take charge of Ayodhya. After Luv and Kush no body knows what happened to Surya Vansh. i think i am right , i do not know the full story. thats all.

There are different versions....but all versions end with Ram and Lakshman attaining jal samadhi.

After their work was done wo saryoo nadi main jal samadhi le liye hanuman bhi jana chate the unke saath par Ram ne kaha tum nahi aa sakte tumhara kaam abhi khatam nahi hua hai aur tumhe kalyug main bhi rahana padega doosron ke dukh door karne ke liye

Theie was no End Of Lords Neither It would BE JAI SHRI RAM