The sixteenth volume of the Oh My Goddess! manga covers chapters 91-97. This chapter notably introduces the character Welsper (with the start of his accompanying story arc) and reintroduces Peorth, who had been absent since the end of Volume 12.
Volume Description
After such epic mishaps as Belldandy's and Keiichi's hands becoming unable to part, and Skuld's robot Banpei falling in love, what harm could the arrival of a cute young boy at the temple do to its residents... the Earth... the universe? Or could the damage be more up close and personal... as he he seeks to get very close to Belldandy? They say when disaster strikes, time seems to slow down... The Problem is, it's slowing down for everybody... for real! Plus a message from creator Kosuke Fujishima, and your fan art and letters!
—Back cover of the volumeIt's not every day you get a call from the creator of the universe! But when the Almighty calls to summon Belldandy's goddess sisters, Urd and Skuld, back home to investigate a problem with the universe's time management program, it can only mean one thing: college boy Keiichi's alone with Belldandy at last! But don't get your hopes up, buddy. Who's this little boy who just appeared out of nowhere in the garden? He's certainly not human, but is he a god, a demon, or something in between? And why is he treating Belldandy like his long lost...lover?
—Description on Dark Horse's website
Chapter List
I Want to Hold Your Hand
Keiichi and Belldandy's hands remain stuck together from the previous day, just as Keiichi is supposed to start working for Chihiro at Whirlwind.
Welcome!
Banpei falls in love with an animatronic Welcoming Girl and bewilders Skuld when he starts acting on his own and visits her at the store she resides at.
The Sorrows of Banpei
Skuld accepts that Banpei is in love with the Welcoming Girl and wants to help them be together.
The Boy Who Knows the Goddesses
After Urd and Skuld return to Heaven again, Keiichi's hopes of spending time alone with Belldandy are thwarted by the sudden appearance of a young boy, one who is suspiciously fond of Belldandy and claims to know a lot about her.
Strange Things Are Happening
The strange boy accompanies Keiichi and Belldandy to work at Whirlwind, and Keiichi notices that something strange with time is happening.
Memories of a Youth
Strange discrepancies with time continue for Keiichi and Belldandy, and Belldandy experiences dreams connected to the boy.
The Goddesses' Greatest Danger
As the boy becomes more desperate for Belldandy to remember him and they both begin experiencing bouts of unconsciousness, Keiichi becomes suspicious of his true nature.