Episode 1

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Synopsis

One morning, Tateomi Kondo, a young man who tends to be ill, wakes up to find a strange bird-subhuman sister next to him...? Tateomi is revitalized after eating an egg laid by a girl who calls herself Lupia, but the effect is so strong that his crotch is also revitalized. After gently nudging him, Lupia welcomes the egg into her vagina.... (Source: DLsite, translated)