BK, Bokurano Daibouken 2

You play as the same character in a side scrolling action RPG.
After the events of the last game
you've returned to your peaceful life
only to have it interrupted by a crazy break in once again.
After cleaning up the mess left by the intruders
you set out to find out why your town has been invaded once more.
Instead of travelling around on a map and fighting side scrolling battles
this time the entire game is set in side scrolling stages.
You select stages from a menu
each of which has 4 levels.