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★★★★★ (3)
by Drakin Author IconMail Icon
Rated: GC · Interactive · Fanfiction · #2110264

Certain characters from the game Undertail are getting large in various ways.

This choice: Muscle growth  •  Go Back...
Chapter #4

Muscle growth

    by: Faneofall Author IconMail Icon
and one Undyne that becomes more muscular. one
But how?
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You have the following choices:

*Pen*
1. she trains harder

*Pen*
2. an alphys experience

*Pen*
3. it's Frisk

*Pen* indicates the next chapter needs to be written.
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