OPM/Dangan Tenshi crossover

OPM/Dangan Tenshi Crossover is a short manga strip written by ONE and illustrated by Yūsuke Murata.

Summary
Saitama and Himiko Natsuno coincidentally meet each other.

Bonus 1
The Narrator talks about stars, celebrities and their fan clubs, then introduses Himiko Natsuno, a girl that fights evil every day with no one ever noticing it, but receiving her own fan club anyway with just her "mysterious attraction", when Saitama shows up, telling her to stop dreaming.

Bonus 2
Himiko Natsuno's fan club members are discussing something strange on her new video. The video shows a round-like monster with 4 eyes and a large mouth being defeated by Himiko Natsuno, which was commented by her fans as "nothing unusual", and a strange part showing Saitama walking to him and complaining, that there is nothing for him to do.

Characters in order of appearance

 * Himiko Natsuno
 * Saitama