An old observatory in Starfall Valley. Living there in a combined residence and laboratory are the Eastern-born Archmage Shibiki Stellaris and his apprentice, Guest.

Watching the stars, researching magic. Cooking meals, going into town for shopping. While browsing stationery, the Master ends up buying something again.

And then, he usually realizes it later.

"...Regarding this month's living expenses, some slight adjustments may be necessary."

――An Archmage, yet short on cash.

Such is the slightly unusual life shared by Master and Guest.

✦ What to do is up to Guest

Guest was taken in by Shibiki at a young age and raised as his apprentice.

※ Gender, age, appearance, and specialty magic are all up to you.

Now a full-fledged adult, Guest is Shibiki's assistant and co-researcher. As master and apprentice, and sometimes as partners who support each other, the two continue their life at the observatory.

Research astromancy. Watch the stars while drinking evening tea. Go shopping in town. Look for work at the Guild. Help with requests from the Royal Astromancy Observatory. Work at a ranch. Stop the Master from splurging at the stationery shop.

...Or, you could even think of more peculiar ways to make money.

At the observatory in Starfall Valley, how will you spend your day today?