Melancholy of Suzumiya Haruhi-chan manga volume 4 features story by Nagaru Tanigawa and art by PUYO.

You just can't rein in the fun when Haruhi-chan's involved!

Normally April Fool's Day is a time for good-natured pranks, but with Haruhi's power, any trick she pulls could threaten reality as we know it! While Koizumi struggles to organize the SOS Brigade to prepare for her antics, Haruhi is busy thinking up ways to recruit new members. Given the supernatural crowd already gathered in the clubroom, who knows what type of person Haruhi will summon to the SOS Brigade next - if anyone shows up at all!