If you're looking for manga similar to Lu Shidai, you might like these titles.
In Ruby-Sapphire, Clefairy will make you laugh hilariously! Accompanied by Red, Clefairy meets with all sorts of problems on its travels entertained by all the silly ideas it comes up with to solve them!!!
In a world filled with talking Pokemon, Red and Green compete with each other in a race to gather all the data needed for the new Pokedex! Bumbling Clefairy frustrates Red with its extreme incompetence and silly behaviour... however, sometimes Clefairy's bizarre ideas to work out in the most surprising ways!!