Comu-shou, Isekai e Iku

Born with a natural communication disorder, our protagonist, Junpei, dies at the age of 28, and wakes up to find himself reincarnated in the world of the game he was obsessed with in life! Junpei sets out on an adventure as a summoner to earn a living, but what awaits him there is a brutal, life-threatening battle that is completely different from the game... A heart-warming battle fantasy set in another world, depicting the growth of a man who cannot form a party due to his lack of cheat abilities and poor communication skills, as he desperately overcomes difficulties with the help of his summoned beasts!

(Source: Line Digital Frontier, translated)