A description from his other manga:
"A hunting and wild gourmet diary composed by an active hunter and manga artist. Appearing in the work are scenes of present day hunting, the cutting up of prey, cooking, and dining. Combined with game dishes such as fried rabbit, roasted duck, and grilled crow, it also introduces survival techniques. The work depicts the author's struggle in the mountains, exerting his ingenuity to win a fight against birds and beasts with hand-made traps and an air gun."
The guy is a real survivalist.