How Can a Sickly Me Save You, the Cannon-Fodder?

[Two male leads, quick transmigration, told from the protagonist's perspective, universally adored protagonist, doted on by everyone, frail and sickly protagonist]

Lin Zhiyun, the S-class guide and third prince of the Interstellar Empire, has to transmigrate through different minor worlds to complete missions and save himself after an accident.

Ji Lin, son of the Interstellar Empire's marshal and a dark sentinel, is secretly in love with Lin Zhiyun. When he watches Lin Zhiyun fall into a coma, he unhesitatingly enters Lin Zhiyun's consciousness.

Watching the person he loves drag his sickly body along to save other people's lives again and again, even paying with his own life...

Ji Lin can no longer sit by.

If saving cannon fodder is your mission,

A-Yun, I'll be the cannon fodder in every world for you.

Will you save me too, A-Yun?

Ji Lin declares that he's gone dark. Nobody gets to steal my wife!!!

P.S. The protagonist is a Tom Sue, adored by everyone. There are chaotic romantic rivalries and multiple fragments of the love interest.