This is on land; Akitsu Maru didn't have a hangar or anything but her tower on the flight deck. If you're asking whether that specific aircraft by identification number flew from Akitsu, I don't know.
From Pixiv tags and other sources, the aircraft is s/n 762-13 of 11 Hikotai, 762 Kokutai, depicted at Katori air base in Chiba prefecture, from which the 11th operated C6Ns around late 1944/early 1945.
I'm having trouble coming up with concrete details, but tl;dr on circumstantial evidence, it's pretty unlikely that 762-13 flew off Akitsu Maru, much less operationally, during the Sep-Nov 1944 period between the C6N's entry into service and Akitsu Maru's sinking.
This is on land; Akitsu Maru didn't have a hangar or anything but her tower on the flight deck. If you're asking whether that specific aircraft by identification number flew from Akitsu, I don't know.
Didn't Akitsu Maru have an officer's quarters 'house' with tatami mats and everything right behind her bridge?
The source of that image is here and was brought up here. I don't know enough about her to say much, but operating standard planes off a deck with a gun platform sitting left, right, and center would be basically impossible unless they launched backwards; that may be what Wikipedia means in that she could launch but not recover planes. The image in the Wikipedia article is from 1944 and she clearly has a fully flat deck, which matches the second model on the site. The first model claims to be her 1942 configuration, so perhaps she was remodeled.
13 April 1944: Aioi. Undergoes remodelling construction at Harima shipyard. The bridge and funnel are moved to starboard to allow installation of a flight deck for flying off the ship’s her seven Army Ki-76 aircraft. A single lift is at the aft end of this deck.