I: Hakoniwagurashi

Jake, an explorer, arrives on a mysterious "island" where any wish can come true, but everyday life on the island is more peaceful than he expected. This is a heartwarming, slapstick comedy depicting the lively and fun daily life of the impetuous and mischievous Jake, the unique inhabitants of the island, and anthropomorphic animals.

(Source: Mangapedia, translated)

Note: Based on Keyroute's mobile game "I (Ai)".