If you're looking for anime similar to The Kabocha Wine: Ore to Aitsu no Shinkon Ryokou!?, you might like these titles.
A comedy centred around a strange bird-like, yet very hefty and incredibly gluttonous creature called Ganmo. Ganmo tries to clear his bad reputation, by helping around the house or giving a hand anytime he can, but he always ends up causing more trouble than good.
Kenichi has spent all his life in the mountain as a feral child. When he comes down to a city in search for his family, a huge culture shock slaps him in the face in forms of technology, social norms and etiquette. Having never lived under social constraints, Kenichi's wild demeanor and naiveté bring all sorts of troubles to his long sought-for family. Will this wild youth learn to adjust to the modern city life?
The story is about a young boy named Arashi Ishino who is obsessed with video games. He would spend all his time trying to beat the games and conquer the local arcades. He would meet competitors like Satoru Daimonji and Ishii, who would try to out match him with higher scores.