Mangaka-sensei to Zashiki Warashi Saishuuwago no Ohanashi

Sakka-san to Zashiki Warashi ga Kurasu Hon
作家さんと座敷わらしが暮らす本

Prequel

Mangaka-sensei and the Zashiki Warashi
Mangaka Sensei to Zashiki Warashi· マンガ家先生と座敷わらし
manga

After moving in his new place, a mangaka is now pretending he can't see the Zashiki-warashi​ who was already living here. *Note: Includes 3 bonus chapters.*