½ Prince - Volume 4 Chapter 9

Ling Lang is thirty-two years old and an A list movie star. He is also the youngest to become the king of the silver screen. Known for having a cold and aloof disposition, people nicknamed him king iceberg of the silver screen. His biggest secret? He is a masochist down to his very bones.

- Description from Novelupdates

After a god screws up and accidentally takes high schooler Shou’s life, he offers him reincarnation with a gift to make up for it. Shou asks to retain all his old memories for the new life. Shou is reborn as Will, a noble’s son in a world where magic use is common and involves knowledge of kanji characters. With all his memories, he’s a brilliant toddler, and when he experiments with magic, he finds that he has an amazing talent for it! What’s more, though he was smart but unloved in his old life, in his new life he has a mother and a father who both love him deeply. His future as Will is looking very bright and cool!

I wanted to rely on hard work and hard work to become stronger, but I found that lying down is more comfortable.

The point is, you can upgrade while lying down!

Why should I stand when I can lie down?

- Description from novelbuddy