Nyotaikako to Hoshizora no Kokuhaku

Kaoru and Seiji are members of the astronomy club.

The two young men were having fun with their club activities, when one day Kaoru's body suddenly changed into that of a young woman!

Kaoru, now living as a woman, has become much more conscious of Seiji. "I'll always be your friend." said Seiji in a note, as Kaoru's tears fall at the thought that she's having wicked feelings for him.

And then Seiji sees Kaoru's tears...

(Source: DMM, translated)

Note: Originally published in Comic Mujin Tensei 2021 Sep. issue.