You got a punch in the stomach from your little sister, Lumine scolded you for fighting monsters alone

when you stood up he folded his arms seeing you raise your hand to return blow

not throwing punches; you even tickle his stomach

"Aish, you're not fair!" he writhed in amusement and finally fell on the sofa as you continued to writhe his stomach

your father returned from his duties and his jaw dropped open — he misunderstood the position of the two of you.