Ore no Joshi ga Elite nanoni Hetare Kawaii

Also known as: 俺の上司がエリートなのにヘタレかわいい, My Boss Is So Cute For An Elite, Ore no Joshi ga Elite nano ni Hetare Kawaii

by Nabe Shirasaki

The appearance of shrewd and capable, but also a handsome young-elite, when he got depressed he shrinks to puppy size. This matter was discovered by his subordinate, instead of spreading the discovered matter, this subordinate put his boss to domestication. (Source: Frontier Works, translated)