https://www.dlsite.com/books/work/=/product_id/BJ149858.html
https://book.dmm.co.jp/detail/b241bktur00908/

translation info:
raw: https://e-hentai.org/s/d65e00aa94/1612001-25
group: desudesu https://desudesu.mangadex.com
commissioner: espeon https://gender.tf

read early and support more gb at https://gender.tf !

Why bang a yandere... when you can be one?

Base +6, thebeginingoftheend +7, kirakabuki +6, Remeark +6, BlueThree +8, Krulla_Chief +5, cld_bak +6, Bathalas +6, Cmdrtimbt +6, anonnimoustache +3, Soldier A +6, liberius +6, Riddik11 +7, and 24 more...

Well at least it's not yaoi yandere.

Base +6, liberius +6, s8dygsadoh +5, Alioshin +5, Vonsta +6, johnnyspeeedwagon +7, r2kmoon2 -6, Divine God of Lust +6, JakeRowling +7, Porokichin66 +9, mondegreened -6, just Zombie +4, lukundra +6, and 6 more...

I wish I had a friend that could do this for me.

Base +7, ssj782 +6, thebeginingoftheend +7, Krulla_Chief +5, Bathalas +6, EllincedeT +10, Saa-Chikou +9, ExtremeRampage +4, Ildzmer +7, BlueThree +8, GaRbS +6

I wish to become that friend

Base +4, liberius +6, thebeginingoftheend +7, EllincedeT +10, ExtremeRampage +4, Ildzmer +7, JustOrion -6

Bros before hoes, lmao.

Base +3, thebeginingoftheend +7, Krulla_Chief +5, Bathalas +6, Soldier A +6, Alioshin +5, liberius +6, flashpanty +8, EllincedeT +10, m42a +16, Leon979 +6, Rabaa +7, Porokichin66 +9, and 21 more...

Wow, what a bro.

Base +7, EllincedeT +10, retnuh1000 +6, ExtremeRampage +4, Ziginus -6, Huggable Hero +6, GaRbS +6, MistahM +6

Shouldn't this have a rape tag?

Base +6, EllincedeT +10, Chiyoko95 +6, JakeRowling +7, richwy +6, lukundra +6, BlueThree +8, Penumbral +6, 01Anon +6

A girfriend which can turn into ANY girl?
Sign me up!

Base +6, liberius +6, EllincedeT +10, Darkelitex +6, Porokichin66 +9, ExtremeRampage +4, Ildzmer +7, BlueThree +8, GaRbS +6, metura +6

a true yandere would have turned the girlfriend into a skinsuit.

just saying.

Base +5, Soldier A +6, EllincedeT +10, m42a +16, graphitegirl +6, JakeRowling +7, Darkelitex +6, Porokichin66 +9, Sexyvore +4, just Zombie +4, retnuh1000 +6, Saa-Chikou +9, JillSandwichLi -6, and 5 more...

I wish I had someone who loved me this much.

Base +6, liberius +6, EllincedeT +10, JillSandwichLi +6, anonymousMember +6

You can tell that it's the MC's best friend when he he meets his girlfriend on the date because he has a mole on his face

Base +6, liberius +6, EllincedeT +10

This story is great. Threw Money at the raw to show my love. GJ team

Base +6, ElisaG +17

How the hell did he leave the mole when he could do like a perfect transformation? Then again, I'm probably just thinking too deep

Base +6, nymask +6, Spooky Ghost Butts +7

I wish there was more of the female version of the friend, but this was great regardless.

Base +7, 01Anon +6

Wait, what about being a sorcerer's son? You can't just drop a subplot like that and not explore it!

Edit: Nervermind. I think it was hinting at a previous story by the author https://e-hentai.org/g/1654376/253098e55b/

Base +9, reroda +14, anonymousMember +6

Nothing says bromance like busting a nut inside your yandere bro who transformed into a chick

Base +6, agez +6, GaRbS +6