Are the Sexy Buttocks Not Good? Episode 5

The more Ainosuke is showered with care, the more he feels that he doesn't want to remain someone who is only protected. Wanting to support Okumi in return, he gradually begins to grow and become more dependable. Meanwhile, Okumi's past emotional wounds are slowly healed by Ainosuke's sincere and unwavering love. Then, out of nowhere, a mysterious young man named Kujo Hiroto appears before Okumi, casually greeting him with, "Hideaki-kun," as if they were close acquaintances... (Source: Japanese = Tokyo MX || Translation = MyDramaList)