Genkai in a Black Company(ブラック会社に勤めてるんだが、もう俺は限界かもしれない)

After the death of this mother, Masao Oneta (Teppei Koike) decides to leave the comfort of his room after years of self isolation and get a job. He lands a position at a small IT firm but doesn't yet realise this company is one of many 'black companies', known for overworking their employees.