Bl recs with 'Heather' situation?

Koimonogatari https://www.mangago.me/read-manga/koimonogatari/ I have no idea how I remember this, but yea this.   1 reply

literally skylar and chan-il   reply

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Literally only blue flag come to my mind i feel like they suit the heather situation completely   reply

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Here https://www.mangago.me/home/mangalist/2005955/   reply