[Namaribou Nayonayo] Atsui Natsu, Oba no Ie de... ~Fundoshi Iwai~ (Web Comic Toutetsu Vol.30) [ChoriScans]

A scorching summer afternoon finds young Jun ringing the doorbell of his aunt's house, where his gorgeous married aunt greets him with a lazy smile and far more warmth than a simple family visit calls for. Her doting affection—teasing how much he resembles his mother, calling him her little mommy's boy while pressing him close—soon melts into sweat-slicked surrender as she protests even while her hips move on their own. Between breathless riding and taking her nephew deep into her mouth, she promises to never treat him like a kid again, thoroughly claiming her sister's boy as her own summer indulgence.